Alright, let's work through 86163280 times 59875380 step by step
86163280 × 59875380 = 59875380 × (86163280)
+ 59875380 × 0 giving us 0
+ 59875380 × 80 yielding 4790030400
+ 59875380 × 200 that equals 11975076000
+ 59875380 × 3000 resulting in 179626140000
+ 59875380 × 60000 which equals 3592522800000
+ 59875380 × 100000 that equals 5987538000000
+ 59875380 × 6000000 that results in 359252280000000
+ 59875380 × 80000000 resulting in 4790030400000000

= 5159059132046400
