500-500:2+160x3= 500-250+480=73(1000-625):5+63x8= 375/5+504= 75+504= 5742:3x8+160-296:8= 14x8+160-37= 112+160-37= 237x(281-156)-6x135:5= 7x125-6x27= 875-162= 713
500-500:2+160x3= 500-250+480=73
(1000-625):5+63x8= 375/5+504= 75+504= 57
42:3x8+160-296:8= 14x8+160-37= 112+160-37= 23
7x(281-156)-6x135:5= 7x125-6x27= 875-162= 713