1-
(2970-34)=29747
29747*24=713928
713928:197=3624
3624+235446=26170
2-
97120:16=6070
4400*16=70400
70400-581=69819
6070+69819=75889
3-
35748:12=2979
2979*17=50643
576576:72=8008
50643+8008=58651
4-
32*27*521=450144
450144+459930=910074
910074-12000=898074