Alright, let's work through 1821 times 1925 step by step
1821 × 1925 = 1925 × (1821)
+ 1925 × 1 which equals 1925
+ 1925 × 20 giving us 38500
+ 1925 × 800 which equals 1540000
+ 1925 × 1000 that equals 1925000

= 3505425
