Alright, let's work through 18418727 times 10385853 step by step
18418727 × 10385853 = 10385853 × (18418727)
+ 10385853 × 7 what gives us 72700971
+ 10385853 × 20 giving us 207717060
+ 10385853 × 700 yielding 7270097100
+ 10385853 × 8000 that is equal 83086824000
+ 10385853 × 10000 that is equal 103858530000
+ 10385853 × 400000 that is equal 4154341200000
+ 10385853 × 8000000 giving us 83086824000000
+ 10385853 × 10000000 producing 103858530000000

= 191294191069131
