Alright, let's work through 51486077 times 65745659 step by step
51486077 × 65745659 = 65745659 × (51486077)
+ 65745659 × 7 that results in 460219613
+ 65745659 × 70 yielding 4602196130
+ 65745659 × 000 that equals 0
+ 65745659 × 6000 that is equal 394473954000
+ 65745659 × 80000 that equals 5259652720000
+ 65745659 × 400000 resulting in 26298263600000
+ 65745659 × 1000000 that is equal 65745659000000
+ 65745659 × 50000000 that results in 3287282950000000

= 3384986061689743
