Alright, let's work through 97928736 times 88004015 step by step
97928736 × 88004015 = 88004015 × (97928736)
+ 88004015 × 6 that is equal 528024090
+ 88004015 × 30 yielding 2640120450
+ 88004015 × 700 that equals 61602810500
+ 88004015 × 8000 resulting in 704032120000
+ 88004015 × 20000 what gives us 1760080300000
+ 88004015 × 900000 that equals 79203613500000
+ 88004015 × 7000000 giving us 616028105000000
+ 88004015 × 90000000 yielding 7920361350000000

= 8618121951875040
