Alright, let's work through 87064161 times 88742748 step by step
87064161 × 88742748 = 88742748 × (87064161)
+ 88742748 × 1 that is equal 88742748
+ 88742748 × 60 that results in 5324564880
+ 88742748 × 100 that results in 8874274800
+ 88742748 × 4000 that equals 354970992000
+ 88742748 × 60000 yielding 5324564880000
+ 88742748 × 000000 resulting in 0
+ 88742748 × 7000000 that results in 621199236000000
+ 88742748 × 80000000 that equals 7099419840000000

= 7726312899454428
