Alright, let's work through 86370102 times 39214621 step by step
86370102 × 39214621 = 39214621 × (86370102)
+ 39214621 × 2 which equals 78429242
+ 39214621 × 00 what gives us 0
+ 39214621 × 100 resulting in 3921462100
+ 39214621 × 0000 which equals 0
+ 39214621 × 70000 producing 2745023470000
+ 39214621 × 300000 which equals 11764386300000
+ 39214621 × 6000000 that is equal 235287726000000
+ 39214621 × 80000000 which equals 3137169680000000

= 3386970815661342
