Alright, let's work through 40415200 times 8001560 step by step
40415200 × 8001560 = 8001560 × (40415200)
+ 8001560 × 0 that is equal 0
+ 8001560 × 00 what gives us 0
+ 8001560 × 200 resulting in 1600312000
+ 8001560 × 5000 which equals 40007800000
+ 8001560 × 10000 producing 80015600000
+ 8001560 × 400000 resulting in 3200624000000
+ 8001560 × 0000000 which equals 0
+ 8001560 × 40000000 yielding 320062400000000

= 323384647712000
