35又七分之四×3.5+63又七分之四×35-七分之一÷三十五分之一
=(35+4/7)×3.5+(63+4/7)×35-1/7×35
=35×3.5+2+63×35+20-5
=35×(3.5+63)+17
=35×(70-3.5)+17
=2450-35×(4-0.5)+17
=2450-140+17.5+17
=2344.5