No problem, we've got 87123271 and 77380768 to multiply
87123271 × 77380768 = 77380768 × (87123271)
+ 77380768 × 1 that results in 77380768
+ 77380768 × 70 resulting in 5416653760
+ 77380768 × 200 giving us 15476153600
+ 77380768 × 3000 yielding 232142304000
+ 77380768 × 20000 that is equal 1547615360000
+ 77380768 × 100000 that results in 7738076800000
+ 77380768 × 7000000 what gives us 541665376000000
+ 77380768 × 80000000 which equals 6190461440000000

= 6741665620652128
