Alright, let's work through 5721 times 6673 step by step
5721 × 6673 = 6673 × (5721)
+ 6673 × 1 that equals 6673
+ 6673 × 20 what gives us 133460
+ 6673 × 700 producing 4671100
+ 6673 × 5000 that equals 33365000

= 38176233
