350:(785-435)=350:350=1

740*(1000:100):100=740*10/100=740/100=7,4

(856-234-621)*75=1*75=75

(345+763):(12*7-83)=1108/(84-83)=1108/1=1108

(546+894):10-72*2=1440/10-144=144-144=0

350:(785-435)=1

785-435=350

350:350=1

740*(1000:100):100=74

1000:100=10

740*10=7400

7400:100=74

(856-234-621)*75=75

856-234=622

622-621=1

1*75=75

(345+763):(12*7-83)=1108

12*7=84

84-83=1

345+763=1108

1108:1=1108

(546+894):10-72*2=0

546+894=1440

1440:10=144

72*2=144

144-144=0