Alright, let's work through 51530929 times 80139893 step by step
51530929 × 80139893 = 80139893 × (51530929)
+ 80139893 × 9 that results in 721259037
+ 80139893 × 20 giving us 1602797860
+ 80139893 × 900 producing 72125903700
+ 80139893 × 0000 giving us 0
+ 80139893 × 30000 that equals 2404196790000
+ 80139893 × 500000 giving us 40069946500000
+ 80139893 × 1000000 producing 80139893000000
+ 80139893 × 50000000 what gives us 4006994650000000

= 4129683136250597
