Alright, let's work through 21002238 times 74552571 step by step
21002238 × 74552571 = 74552571 × (21002238)
+ 74552571 × 8 giving us 596420568
+ 74552571 × 30 that equals 2236577130
+ 74552571 × 200 which equals 14910514200
+ 74552571 × 2000 that is equal 149105142000
+ 74552571 × 00000 resulting in 0
+ 74552571 × 000000 that equals 0
+ 74552571 × 1000000 resulting in 74552571000000
+ 74552571 × 20000000 which equals 1491051420000000

= 1565770839653898
