Alright, let's work through 42720201 times 37213803 step by step
42720201 × 37213803 = 37213803 × (42720201)
+ 37213803 × 1 that is equal 37213803
+ 37213803 × 00 resulting in 0
+ 37213803 × 200 resulting in 7442760600
+ 37213803 × 0000 producing 0
+ 37213803 × 20000 resulting in 744276060000
+ 37213803 × 700000 resulting in 26049662100000
+ 37213803 × 2000000 that results in 74427606000000
+ 37213803 × 40000000 resulting in 1488552120000000

= 1589781144134403
