Alright, let's work through 6721 times 310 step by step
6721 × 310 = 310 × (6721)
+ 310 × 1 what gives us 310
+ 310 × 20 that equals 6200
+ 310 × 700 resulting in 217000
+ 310 × 6000 that is equal 1860000

= 2083510
