Alright, let's work through 86908779 times 42808578 step by step
86908779 × 42808578 = 42808578 × (86908779)
+ 42808578 × 9 what gives us 385277202
+ 42808578 × 70 giving us 2996600460
+ 42808578 × 700 yielding 29966004600
+ 42808578 × 8000 which equals 342468624000
+ 42808578 × 00000 giving us 0
+ 42808578 × 900000 producing 38527720200000
+ 42808578 × 6000000 which equals 256851468000000
+ 42808578 × 80000000 that results in 3424686240000000

= 3720441244706262
