(620-129*3)-128/4-2 = 620 - 387 - 32 - 2 = 620 - 421 - 2 = 199
620-(129*3-128/4)-2 = 620 - (387 - 32) - 2 = 620 - 355 - 2 = 263
620-129*3-128/4-2 = 620 - 387 - 32 - 2 = 620 - 421 - 2 = 199
42000/700 - 18000/900 = 60 - 20 = 40
8100/900 + 3200/400 = 9 + 8 = 17
1800/(1000 - 200*2) = 1800 / (1000 - 400) = 1800 / 600 = 3
(620-129*3)-128/4-2 = 620 - 387 - 32 - 2 = 620 - 421 - 2 = 199
620-(129*3-128/4)-2 = 620 - (387 - 32) - 2 = 620 - 355 - 2 = 263
620-129*3-128/4-2 = 620 - 387 - 32 - 2 = 620 - 421 - 2 = 199
42000/700 - 18000/900 = 60 - 20 = 40
8100/900 + 3200/400 = 9 + 8 = 17
1800/(1000 - 200*2) = 1800 / (1000 - 400) = 1800 / 600 = 3