refactor: highlight multiplication in brackets

app/models/form/lettings/questions/age_known.rb

@@ -15,7 +15,7 @@ class Form::Lettings::Questions::AgeKnown < ::Form::Question
         { "age#{person_index}_known" => 1 },
       ],
     }
-    @question_number = 31 + 4 * person_index
+    @question_number = 31 + (4 * person_index)
   end
 
   ANSWER_OPTIONS = { "0" => { "value" => "Yes" }, "1" => { "value" => "No" } }.freeze

app/models/form/lettings/questions/person_gender_identity.rb

@@ -8,7 +8,7 @@ class Form::Lettings::Questions::PersonGenderIdentity < ::Form::Question
     @check_answers_card_number = person_index
     @hint_text = ""
     @answer_options = ANSWER_OPTIONS
-    @question_number = 32 + 4 * person_index
+    @question_number = 32 + (4 * person_index)
   end
 
   ANSWER_OPTIONS = {

app/models/form/lettings/questions/person_relationship.rb

@@ -8,7 +8,7 @@ class Form::Lettings::Questions::PersonRelationship < ::Form::Question
     @check_answers_card_number = person_index
     @hint_text = ""
     @answer_options = ANSWER_OPTIONS
-    @question_number = 30 + 4 * person_index
+    @question_number = 30 + (4 * person_index)
   end
 
   ANSWER_OPTIONS = {

app/models/form/lettings/questions/person_working_situation.rb

@@ -8,7 +8,7 @@ class Form::Lettings::Questions::PersonWorkingSituation < ::Form::Question
     @check_answers_card_number = person_index
     @hint_text = ""
     @answer_options = ANSWER_OPTIONS
-    @question_number = 33 + 4 * person_index
+    @question_number = 33 + (4 * person_index)
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/person_age.rb

@@ -12,6 +12,6 @@ class Form::Sales::Questions::PersonAge < ::Form::Question
     @check_answers_card_number = person_index
     @min = 0
     @max = 110
-    @question_number = 29 + person_index * 4
+    @question_number = 29 + (4 * person_index)
   end
 end

app/models/form/sales/questions/person_age_known.rb

@@ -19,7 +19,7 @@ class Form::Sales::Questions::PersonAgeKnown < ::Form::Question
       ],
     }
     @check_answers_card_number = person_index
-    @question_number = 29 + person_index * 4
+    @question_number = 29 + (4 * person_index)
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/person_gender_identity.rb

@@ -12,7 +12,7 @@ class Form::Sales::Questions::PersonGenderIdentity < ::Form::Question
       },
       "value" => "Prefers not to say",
     }]
-    @question_number = 30 + person_index * 4
+    @question_number = 30 + (4 * person_index)
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/person_relationship_to_buyer_1.rb

@@ -12,7 +12,7 @@ class Form::Sales::Questions::PersonRelationshipToBuyer1 < ::Form::Question
       },
       "value" => "Prefers not to say",
     }]
-    @question_number = 28 + person_index * 4
+    @question_number = 28 + (4 * person_index)
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/person_working_situation.rb

@@ -12,7 +12,7 @@ class Form::Sales::Questions::PersonWorkingSituation < ::Form::Question
       },
       "value" => "Prefers not to say",
     }]
-    @question_number = 31 + person_index * 4
+    @question_number = 31 + (4 * person_index)
   end
 
   ANSWER_OPTIONS = {