240+(118-80)×3=240+38×3=240+114=354
358+(412-299)×4=358+113×4=358+452=810
980-137×6+125=980-822+125=158+125=283
631-(683-185)÷6=631-498÷6=631-83=548
240+(118-80)×3=240+38×3=240+114=354
358+(412-299)×4=358+113×4=358+452=810
980-137×6+125=980-822+125=158+125=283
631-(683-185)÷6=631-498÷6=631-83=548