№9
7410:3=2470 , 2470*3=7410 , 7410:2470=3
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4850:5=970 , 970*5=4850 , 4850:970=5
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618:6=103 , 103*6=618 , 618:103=6
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912:3=304 , 304*3=912 , 912:304=3
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37600:4=9400 , 9400*4=37600 , 37600:9400=4
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81600:6=13600 , 13600*6=81600 , 81600:13600=6
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424000:4=106000 , 106000*4=424000 , 424000:106000=4
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86400:8=10800 , 10800*8=86400 , 86400:10800=8
№10
1)200000-160032:8=200000-20004=179996
2)900000-54027:9=900000-6003=893997
3)200000-521160:4=200000-130290=69710
4)400000-81270:3=400000-27090=372910