Alright, let's work through 86609608 times 72040206 step by step
86609608 × 72040206 = 72040206 × (86609608)
+ 72040206 × 8 yielding 576321648
+ 72040206 × 00 giving us 0
+ 72040206 × 600 that results in 43224123600
+ 72040206 × 9000 yielding 648361854000
+ 72040206 × 00000 which equals 0
+ 72040206 × 600000 resulting in 43224123600000
+ 72040206 × 6000000 yielding 432241236000000
+ 72040206 × 80000000 giving us 5763216480000000

= 6239374001899248
