Alright, let's work through 97029878 times 86209337 step by step
97029878 × 86209337 = 86209337 × (97029878)
+ 86209337 × 8 which equals 689674696
+ 86209337 × 70 which equals 6034653590
+ 86209337 × 800 giving us 68967469600
+ 86209337 × 9000 giving us 775884033000
+ 86209337 × 20000 giving us 1724186740000
+ 86209337 × 000000 what gives us 0
+ 86209337 × 7000000 that is equal 603465359000000
+ 86209337 × 90000000 what gives us 7758840330000000

= 8364881451570886
