No problem, we've got 12013821 and 31910852 to multiply
12013821 × 31910852 = 31910852 × (12013821)
+ 31910852 × 1 what gives us 31910852
+ 31910852 × 20 that equals 638217040
+ 31910852 × 800 that is equal 25528681600
+ 31910852 × 3000 that equals 95732556000
+ 31910852 × 10000 that is equal 319108520000
+ 31910852 × 000000 what gives us 0
+ 31910852 × 2000000 yielding 63821704000000
+ 31910852 × 10000000 giving us 319108520000000

= 383371263885492
