We divide 639189 by 71
The aim is to understand the frequency of 71 in 639189.

Let's proceed to step 1:
When dividing 6 by 71, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 71

Let's proceed to step 2:
When dividing 63 by 71, we get 0 with a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Bring next digit (9) of the dividend behind the 63 and repeat the process: 639 / 71

Advancing to step 3:
When dividing 639 by 71, we get 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 639 from 639, we get 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 71

Moving on to step 4:
1 divided by 71 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 90.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 71

Going ahead to step 5:
71 can be fit into 18 0 times, resulting in a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 900.0
If we subtract 0 from 18, we get 18.
Include the next digit (9) from the dividend after 18, then repeat: 189 / 71

Step 6:
If we divide 189 by 71, we get 2 and a remainder of 47.
Record the quotient 2 as the next digit in the result. 
Result so far: 9002.0
Subtract 142 from 189 to get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 7:
If we divide 470 by 71, we get 6 and a remainder of 44.
The next digit of our result is 6. 
Result so far: 9002.6
Subtract 426 from 470 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 8:
71 goes into 440 6 times with a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 9002.66
The remainder is 14 after subtracting 426 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 9002.66 and a remainder of 0.014.