No problem, we've got 78227878 and 83135888 to multiply
78227878 × 83135888 = 83135888 × (78227878)
+ 83135888 × 8 that equals 665087104
+ 83135888 × 70 resulting in 5819512160
+ 83135888 × 800 what gives us 66508710400
+ 83135888 × 7000 that results in 581951216000
+ 83135888 × 20000 producing 1662717760000
+ 83135888 × 200000 that results in 16627177600000
+ 83135888 × 8000000 what gives us 665087104000000
+ 83135888 × 70000000 that equals 5819512160000000

= 6503544103885664
