552 : 92 = 6 45421 : 53 = 857 (404*408) : 2 - 80070 = 2346
315 : 63 = 5 171310 :74 = 2315 1) 404* 408 = 164832
2) 164832 : 2 = 82416
3) 82416 - 80070 = 2346
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(567 + 133) * 120 - 9090 = 74910
1) 567 + 133 = 700
2) 700 * 120 = 84000
3) 84000 - 9090 = 74910