No problem, we've got 2021 and 1872 to multiply
2021 × 1872 = 1872 × (2021)
+ 1872 × 1 what gives us 1872
+ 1872 × 20 which equals 37440
+ 1872 × 000 resulting in 0
+ 1872 × 2000 which equals 3744000

= 3783312
