Alright, let's work through 31005979 times 53744077 step by step
31005979 × 53744077 = 53744077 × (31005979)
+ 53744077 × 9 giving us 483696693
+ 53744077 × 70 that equals 3762085390
+ 53744077 × 900 which equals 48369669300
+ 53744077 × 5000 that is equal 268720385000
+ 53744077 × 00000 that equals 0
+ 53744077 × 000000 what gives us 0
+ 53744077 × 1000000 what gives us 53744077000000
+ 53744077 × 30000000 that is equal 1612322310000000

= 1666387722836383
