Alright, let's work through 99237181 times 72196308 step by step
99237181 × 72196308 = 72196308 × (99237181)
+ 72196308 × 1 what gives us 72196308
+ 72196308 × 80 that is equal 5775704640
+ 72196308 × 100 that is equal 7219630800
+ 72196308 × 7000 what gives us 505374156000
+ 72196308 × 30000 which equals 2165889240000
+ 72196308 × 200000 giving us 14439261600000
+ 72196308 × 9000000 that is equal 649766772000000
+ 72196308 × 90000000 that is equal 6497667720000000

= 7164558084527748
