15745 23145 37456 22331
x 2 x 3 x 4 x 2
--------- ---------- ---------- ----------
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15745 23145 37456 22331
x 2 x 3 x 4 x 2
--------- ---------- ---------- ----------
??? ??? ??? ???
15745 x 2 = 31490
23145 x 3 = 69435
37456 x 4 = 149824
22331 x 2 = 44662