Alright, let's work through 31121793 times 96031152 step by step
31121793 × 96031152 = 96031152 × (31121793)
+ 96031152 × 3 that is equal 288093456
+ 96031152 × 90 producing 8642803680
+ 96031152 × 700 producing 67221806400
+ 96031152 × 1000 which equals 96031152000
+ 96031152 × 20000 that equals 1920623040000
+ 96031152 × 100000 that results in 9603115200000
+ 96031152 × 1000000 that equals 96031152000000
+ 96031152 × 30000000 that equals 2880934560000000

= 2988661634095536
