Alright, let's work through 42364682 times 42100206 step by step
42364682 × 42100206 = 42100206 × (42364682)
+ 42100206 × 2 what gives us 84200412
+ 42100206 × 80 giving us 3368016480
+ 42100206 × 600 yielding 25260123600
+ 42100206 × 4000 yielding 168400824000
+ 42100206 × 60000 which equals 2526012360000
+ 42100206 × 300000 that is equal 12630061800000
+ 42100206 × 2000000 which equals 84200412000000
+ 42100206 × 40000000 what gives us 1684008240000000

= 1783561839324492
