No problem, we've got 78909021 and 77221493 to multiply
78909021 × 77221493 = 77221493 × (78909021)
+ 77221493 × 1 what gives us 77221493
+ 77221493 × 20 which equals 1544429860
+ 77221493 × 000 that results in 0
+ 77221493 × 9000 producing 694993437000
+ 77221493 × 00000 yielding 0
+ 77221493 × 900000 giving us 69499343700000
+ 77221493 × 8000000 resulting in 617771944000000
+ 77221493 × 70000000 resulting in 5405504510000000

= 6093472412788353
