651611 ÷ 31 
The aim is to understand the frequency of 31 in 651611.

Moving on to step 1:
If we divide 6 by 31, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 31

Moving on to step 2:
The number 31 fits into 65 2 times, leaving a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 3 after subtracting 62 from 65.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 31

Moving on to step 3:
The number 31 fits into 31 1 times, leaving a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Deduct 31 from 31 and we're left with 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 31

Advancing to step 4:
31 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 210.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 31

Advancing to step 5:
The number 31 fits into 61 1 times, leaving a remainder of 30.
Put 1 as the next digit of the answer. 
Result so far: 2101.0
The remainder is 30 after subtracting 31 from 61.
Include the next digit (1) from the dividend after 30, then repeat: 301 / 31

Moving on to step 6:
When dividing 301 by 31, we get 9 with a remainder of 22.
Write down 9 as next digit of the result. 
Result so far: 21019.0
If we take 279 away from 301, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 7:
If we divide 220 by 31, we get 7 and a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 21019.7
Subtract 217 from 220 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 8:
31 goes into 30 0 times with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 21019.7
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 9:
300 divided by 31 is 9 with a remainder of 21.
The next digit of our result is 9. 
Result so far: 21019.709
Subtract 279 from 300 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 10:
When dividing 210 by 31, we get 6 with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 21019.7096
Subtract 186 from 210 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 11:
31 goes into 240 7 times with a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 21019.70967
Subtracting 217 from 240 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 12:
31 goes into 230 7 times with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 21019.709677
If we subtract 217 from 230, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The quotient of the division is 21019.709677, and the remainder is 1.3e-06.