Alright, let's work through 53708724 times 21379289 step by step
53708724 × 21379289 = 21379289 × (53708724)
+ 21379289 × 4 giving us 85517156
+ 21379289 × 20 which equals 427585780
+ 21379289 × 700 that is equal 14965502300
+ 21379289 × 8000 giving us 171034312000
+ 21379289 × 00000 that results in 0
+ 21379289 × 700000 giving us 14965502300000
+ 21379289 × 3000000 what gives us 64137867000000
+ 21379289 × 50000000 that equals 1068964450000000

= 1148254332217236
