No problem, we've got 78421279 and 9399838 to multiply
78421279 × 9399838 = 9399838 × (78421279)
+ 9399838 × 9 which equals 84598542
+ 9399838 × 70 yielding 657988660
+ 9399838 × 200 giving us 1879967600
+ 9399838 × 1000 yielding 9399838000
+ 9399838 × 20000 resulting in 187996760000
+ 9399838 × 400000 what gives us 3759935200000
+ 9399838 × 8000000 that is equal 75198704000000
+ 9399838 × 70000000 yielding 657988660000000

= 737147318352802
