Alright, let's work through 74320720 times 86645046 step by step
74320720 × 86645046 = 86645046 × (74320720)
+ 86645046 × 0 producing 0
+ 86645046 × 20 what gives us 1732900920
+ 86645046 × 700 resulting in 60651532200
+ 86645046 × 0000 that results in 0
+ 86645046 × 20000 that is equal 1732900920000
+ 86645046 × 300000 which equals 25993513800000
+ 86645046 × 4000000 yielding 346580184000000
+ 86645046 × 70000000 that results in 6065153220000000

= 6439522203153120
