Alright, let's work through 1881 times 7221 step by step
1881 × 7221 = 7221 × (1881)
+ 7221 × 1 that is equal 7221
+ 7221 × 80 that equals 577680
+ 7221 × 800 which equals 5776800
+ 7221 × 1000 producing 7221000

= 13582701
