No problem, we've got 19962794 and 78778512 to multiply
19962794 × 78778512 = 78778512 × (19962794)
+ 78778512 × 4 what gives us 315114048
+ 78778512 × 90 that equals 7090066080
+ 78778512 × 700 that equals 55144958400
+ 78778512 × 2000 that results in 157557024000
+ 78778512 × 60000 yielding 4726710720000
+ 78778512 × 900000 that equals 70900660800000
+ 78778512 × 9000000 resulting in 709006608000000
+ 78778512 × 10000000 giving us 787785120000000

= 1572639206682528
