Alright, let's work through 3221 times 7392 step by step
3221 × 7392 = 7392 × (3221)
+ 7392 × 1 giving us 7392
+ 7392 × 20 which equals 147840
+ 7392 × 200 which equals 1478400
+ 7392 × 3000 that results in 22176000

= 23809632
