200*500+1000000*2-5000000+460000-56-71-97+300069 = -3060155
1) 200*500 = 100000
2) 1000000*2 = 2000000
3) 100000+2000000 = 2100000
4) 2100000 - 5000000 = -2900000
5) -2900000 + 460000 = -3360000
6) -3360000-56-71-97 = -3360224
7) -3360224 + 300069 = -3060155
Как-то так...