Alright, let's work through 6631 times 3316 step by step
6631 × 3316 = 3316 × (6631)
+ 3316 × 1 resulting in 3316
+ 3316 × 30 what gives us 99480
+ 3316 × 600 giving us 1989600
+ 3316 × 6000 resulting in 19896000

= 21988396
