Alright, let's work through 40472970 times 40448084 step by step
40472970 × 40448084 = 40448084 × (40472970)
+ 40448084 × 0 yielding 0
+ 40448084 × 70 producing 2831365880
+ 40448084 × 900 that results in 36403275600
+ 40448084 × 2000 yielding 80896168000
+ 40448084 × 70000 that results in 2831365880000
+ 40448084 × 400000 resulting in 16179233600000
+ 40448084 × 0000000 resulting in 0
+ 40448084 × 40000000 that equals 1617923360000000

= 1637054090289480
