Alright, let's work through 31137249 times 5001749 step by step
31137249 × 5001749 = 5001749 × (31137249)
+ 5001749 × 9 what gives us 45015741
+ 5001749 × 40 that is equal 200069960
+ 5001749 × 200 which equals 1000349800
+ 5001749 × 7000 which equals 35012243000
+ 5001749 × 30000 that is equal 150052470000
+ 5001749 × 100000 yielding 500174900000
+ 5001749 × 1000000 that equals 5001749000000
+ 5001749 × 30000000 producing 150052470000000

= 155740704048501
