Alright, let's work through 56121124 times 13356804 step by step
56121124 × 13356804 = 13356804 × (56121124)
+ 13356804 × 4 yielding 53427216
+ 13356804 × 20 producing 267136080
+ 13356804 × 100 that results in 1335680400
+ 13356804 × 1000 that equals 13356804000
+ 13356804 × 20000 producing 267136080000
+ 13356804 × 100000 that equals 1335680400000
+ 13356804 × 6000000 producing 80140824000000
+ 13356804 × 50000000 that equals 667840200000000

= 749598853527696
