Alright, let's work through 40138229 times 83722957 step by step
40138229 × 83722957 = 83722957 × (40138229)
+ 83722957 × 9 giving us 753506613
+ 83722957 × 20 what gives us 1674459140
+ 83722957 × 200 yielding 16744591400
+ 83722957 × 8000 that equals 669783656000
+ 83722957 × 30000 giving us 2511688710000
+ 83722957 × 100000 that is equal 8372295700000
+ 83722957 × 0000000 that equals 0
+ 83722957 × 40000000 which equals 3348918280000000

= 3360491220623153
