Let's calculate 1984 x 3635
1984 × 3635 = 3635 × (1984)
+ 3635 × 4 what gives us 14540
+ 3635 × 80 which equals 290800
+ 3635 × 900 which equals 3271500
+ 3635 × 1000 what gives us 3635000

= 7211840
