Alright, let's work through 88061071 times 66864390 step by step
88061071 × 66864390 = 66864390 × (88061071)
+ 66864390 × 1 yielding 66864390
+ 66864390 × 70 that results in 4680507300
+ 66864390 × 000 resulting in 0
+ 66864390 × 1000 that results in 66864390000
+ 66864390 × 60000 that results in 4011863400000
+ 66864390 × 000000 that results in 0
+ 66864390 × 8000000 which equals 534915120000000
+ 66864390 × 80000000 that results in 5349151200000000

= 5888149795161690
