21 and 5
3 and 7
21 multiplies to 21 to make it 441
21
10.5 x 2=21
21 and 7
21 x 3
79
-43
21
It can't be done with whole numbers....but if you want decimals....these two will work 3.7731879764631448414184572689148 17.226812023536855158581542731085
63 & 5 21 & 15 9 & 35