Alright, let's work through 51335017 times 10438385 step by step
51335017 × 10438385 = 10438385 × (51335017)
+ 10438385 × 7 giving us 73068695
+ 10438385 × 10 which equals 104383850
+ 10438385 × 000 which equals 0
+ 10438385 × 5000 resulting in 52191925000
+ 10438385 × 30000 that equals 313151550000
+ 10438385 × 300000 which equals 3131515500000
+ 10438385 × 1000000 what gives us 10438385000000
+ 10438385 × 50000000 producing 521919250000000

= 535854671427545
