correctly add rent and charges

app/models/case_log.rb

@@ -263,7 +263,7 @@ private
     self.totchild = get_totchild
     self.totelder = get_totelder
     self.totadult = get_totadult
-    self.tcharge = brent.to_i + scharge.to_i + pscharge.to_i + supcharg.to_i
+    self.tcharge = brent.to_f + scharge.to_f + pscharge.to_f + supcharg.to_f
     self.has_benefits = get_has_benefits
     self.nocharge = household_charge == "Yes" ? "No" : "Yes"
   end

spec/models/case_log_spec.rb

@@ -1138,16 +1138,16 @@ RSpec.describe Form, type: :model do
         CaseLog.create({
           managing_organisation: organisation,
           owning_organisation: organisation,
-          brent: 5,
-          scharge: 10,
+          brent: 5.77,
+          scharge: 10.01,
           pscharge: 3,
-          supcharg: 12,
+          supcharg: 12.2,
         })
       end
 
       it "correctly sums rental charges" do
         record_from_db = ActiveRecord::Base.connection.execute("select tcharge from case_logs where id=#{case_log.id}").to_a[0]
-        expect(record_from_db["tcharge"]).to eq(30)
+        expect(record_from_db["tcharge"]).to eq(30.98)
       end
     end