Alright, let's work through 51522707 times 99637349 step by step
51522707 × 99637349 = 99637349 × (51522707)
+ 99637349 × 7 yielding 697461443
+ 99637349 × 00 giving us 0
+ 99637349 × 700 giving us 69746144300
+ 99637349 × 2000 that is equal 199274698000
+ 99637349 × 20000 that equals 1992746980000
+ 99637349 × 500000 yielding 49818674500000
+ 99637349 × 1000000 resulting in 99637349000000
+ 99637349 × 50000000 producing 4981867450000000

= 5133585938783743
