21 x 60 =  1260 204 x 615 = 246 x 510 = 125460
15 x 93 = 1395 1301 x 9170 = 1310 x 9107 = 11930170
35 x 41 = 1435 2004 x 6015 = 2406 x 5010 = 12054060
30 x 51 = 1530 1620 x 8073 = 1863 x 7020 = 2070 x 6318 = 13078260
21 x 87 = 1827
27 x 81 = 2187
80 x 86 = 6880

etc....