Alright, let's work through 64309369 times 31307131 step by step
64309369 × 31307131 = 31307131 × (64309369)
+ 31307131 × 9 giving us 281764179
+ 31307131 × 60 that equals 1878427860
+ 31307131 × 300 that results in 9392139300
+ 31307131 × 9000 giving us 281764179000
+ 31307131 × 00000 yielding 0
+ 31307131 × 300000 producing 9392139300000
+ 31307131 × 4000000 producing 125228524000000
+ 31307131 × 60000000 that is equal 1878427860000000

= 2013341839810339
