Alright, let's work through 40045288 times 6323403 step by step
40045288 × 6323403 = 6323403 × (40045288)
+ 6323403 × 8 yielding 50587224
+ 6323403 × 80 what gives us 505872240
+ 6323403 × 200 what gives us 1264680600
+ 6323403 × 5000 that equals 31617015000
+ 6323403 × 40000 that is equal 252936120000
+ 6323403 × 000000 that is equal 0
+ 6323403 × 0000000 resulting in 0
+ 6323403 × 40000000 producing 252936120000000

= 253222494275064
