We're going to solve 83747994 multiplied by 47720010
83747994 × 47720010 = 47720010 × (83747994)
+ 47720010 × 4 that is equal 190880040
+ 47720010 × 90 that is equal 4294800900
+ 47720010 × 900 giving us 42948009000
+ 47720010 × 7000 that is equal 334040070000
+ 47720010 × 40000 giving us 1908800400000
+ 47720010 × 700000 what gives us 33404007000000
+ 47720010 × 3000000 yielding 143160030000000
+ 47720010 × 80000000 resulting in 3817600800000000

= 3996455111159940
