Alright, let's work through 51938426 times 78899210 step by step
51938426 × 78899210 = 78899210 × (51938426)
+ 78899210 × 6 that is equal 473395260
+ 78899210 × 20 which equals 1577984200
+ 78899210 × 400 what gives us 31559684000
+ 78899210 × 8000 what gives us 631193680000
+ 78899210 × 30000 giving us 2366976300000
+ 78899210 × 900000 which equals 71009289000000
+ 78899210 × 1000000 yielding 78899210000000
+ 78899210 × 50000000 yielding 3944960500000000

= 4097900780043460
