45221 ÷ 7 = 6460 R1
We're going to perform division on 45221 with 7 as the divisor.

Step 1:
7 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 4 to get 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 7

Step 2:
7 goes into 45 6 times with a remainder of 3.
Write down 6 as next digit of of the result. 
Result so far: 6
Subtract 42 from 45 to get 3.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 7

Step 3:
7 goes into 32 4 times with a remainder of 4.
Write down 4 as next digit of of the result. 
Result so far: 64
Subtract 28 from 32 to get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 7

Step 4:
7 goes into 42 6 times with a remainder of 0.
Write down 6 as next digit of of the result. 
Result so far: 646
Subtract 42 from 42 to get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 7

Step 5:
7 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of of the result. 
Result so far: 6460
Subtract 0 from 1 to get 1.

The final result is 6460 with a remainder of 1.