31180650 divided by 213 
The aim is to understand the frequency of 213 in 31180650.

On to step 1:
If we divide 3 by 213, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 213

Advancing to step 2:
213 can be fit into 31 0 times, resulting in a remainder of 31.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Fetch the next digit (1) from the dividend, attach it to 31 and continue: 311 / 213

Step 3:
213 goes into 311 1 times with a remainder of 98.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 213 away from 311, we end up with 98.
Take the next digit (8) from the dividend and append it to 98, then repeat: 988 / 213

Moving on to step 4:
The number 213 fits into 988 4 times, leaving a remainder of 136.
Use 4 as the next digit of our solution. 
Result so far: 14.0
The remainder is 136 after subtracting 852 from 988.
Append the next digit (0) from the dividend to 136 and continue with: 1360 / 213

Going ahead to step 5:
213 goes into 1360 6 times with a remainder of 82.
The number 6 becomes the next digit in our result. 
Result so far: 146.0
Subtracting 1278 from 1360 leaves us with 82.
Take the next digit (6) from the dividend and append it to 82, then repeat: 826 / 213

Step 6:
826 divided by 213 is 3 with a remainder of 187.
The number 3 becomes the next digit in our result. 
Result so far: 1463.0
The remainder is 187 after subtracting 639 from 826.
Bring next digit (5) of the dividend behind the 187 and repeat the process: 1875 / 213

Going ahead to step 7:
If we divide 1875 by 213, we get 8 and a remainder of 171.
Use 8 as the next digit of our solution. 
Result so far: 14638.0
If we take 1704 away from 1875, we end up with 171.
Include the next digit (0) from the dividend after 171, then repeat: 1710 / 213

Step 8:
1710 divided by 213 is 8 with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 146388.0
If we subtract 1704 from 1710, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
60 divided by 213 is 0 with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 146388.0
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 10:
213 goes into 600 2 times with a remainder of 174.
Write down 2 as next digit of the result. 
Result so far: 146388.02
Deduct 426 from 600 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Advancing to step 11:
213 can be fit into 1740 8 times, resulting in a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 146388.028
If we take 1704 away from 1740, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 12:
213 can be fit into 360 1 times, resulting in a remainder of 147.
The number 1 becomes the next digit in our result. 
Result so far: 146388.0281
The remainder is 147 after subtracting 213 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1470, and continue the process.

Step 13:
213 goes into 1470 6 times with a remainder of 192.
Record the quotient 6 as the next digit in the result. 
Result so far: 146388.02816
The remainder is 192 after subtracting 1278 from 1470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Moving on to step 14:
The number 213 fits into 1920 9 times, leaving a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 146388.028169
Subtracting 1917 from 1920 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 15:
The number 213 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 146388.028169
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.

Let's proceed to step 16:
300 divided by 213 is 1 with a remainder of 87.
Put 1 as the next digit of the answer. 
Result so far: 146388.02816901
The remainder is 87 after subtracting 213 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Our division results in 146388.02816901 with a remaining 8.7e-08.