Alright, let's work through 1553 times 2187 step by step
1553 × 2187 = 2187 × (1553)
+ 2187 × 3 resulting in 6561
+ 2187 × 50 which equals 109350
+ 2187 × 500 that is equal 1093500
+ 2187 × 1000 resulting in 2187000

= 3396411
