No problem, we've got 21163711 and 48223800 to multiply
21163711 × 48223800 = 48223800 × (21163711)
+ 48223800 × 1 that equals 48223800
+ 48223800 × 10 giving us 482238000
+ 48223800 × 700 that is equal 33756660000
+ 48223800 × 3000 giving us 144671400000
+ 48223800 × 60000 which equals 2893428000000
+ 48223800 × 100000 what gives us 4822380000000
+ 48223800 × 1000000 resulting in 48223800000000
+ 48223800 × 20000000 that is equal 964476000000000

= 1020594566521800
