51059535 divided by 213 
The aim is to understand the frequency of 213 in 51059535.

Step 1:
213 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 213

Advancing to step 2:
213 can be fit into 51 0 times, resulting in a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Take the next digit (0) from the dividend and append it to 51, then repeat: 510 / 213

Advancing to step 3:
213 goes into 510 2 times with a remainder of 84.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 426 from 510 to get 84.
Append the next digit (5) from the dividend to 84 and continue with: 845 / 213

On to step 4:
213 can be fit into 845 3 times, resulting in a remainder of 206.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
The remainder is 206 after subtracting 639 from 845.
Include the next digit (9) from the dividend after 206, then repeat: 2069 / 213

Advancing to step 5:
213 can be fit into 2069 9 times, resulting in a remainder of 152.
Put 9 as the next digit of the answer. 
Result so far: 239.0
Subtracting 1917 from 2069 leaves us with 152.
Include the next digit (5) from the dividend after 152, then repeat: 1525 / 213

Step 6:
1525 divided by 213 is 7 with a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 2397.0
Subtract 1491 from 1525 to get 34.
Grab the next digit (3) from the dividend, add it to 34, then carry on: 343 / 213

Advancing to step 7:
If we divide 343 by 213, we get 1 and a remainder of 130.
Record the quotient 1 as the next digit in the result. 
Result so far: 23971.0
Deduct 213 from 343 and we're left with 130.
Bring next digit (5) of the dividend behind the 130 and repeat the process: 1305 / 213

Going ahead to step 8:
When dividing 1305 by 213, we get 6 with a remainder of 27.
Put 6 as the next digit of the answer. 
Result so far: 239716.0
Subtracting 1278 from 1305 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 9:
213 can be fit into 270 1 times, resulting in a remainder of 57.
Record the quotient 1 as the next digit in the result. 
Result so far: 239716.1
If we take 213 away from 270, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 10:
When dividing 570 by 213, we get 2 with a remainder of 144.
Write down 2 as next digit of the result. 
Result so far: 239716.12
If we take 426 away from 570, we end up with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Step 11:
213 can be fit into 1440 6 times, resulting in a remainder of 162.
Use 6 as the next digit of our solution. 
Result so far: 239716.126
If we take 1278 away from 1440, we end up with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Advancing to step 12:
When dividing 1620 by 213, we get 7 with a remainder of 129.
Write down 7 as next digit of the result. 
Result so far: 239716.1267
If we take 1491 away from 1620, we end up with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Advancing to step 13:
When dividing 1290 by 213, we get 6 with a remainder of 12.
The next digit of our result is 6. 
Result so far: 239716.12676
The remainder is 12 after subtracting 1278 from 1290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 14:
If we divide 120 by 213, we get 0 and a remainder of 120.
Write down 0 as next digit of the result. 
Result so far: 239716.12676
Deduct 0 from 120 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 15:
When dividing 1200 by 213, we get 5 with a remainder of 135.
The number 5 becomes the next digit in our result. 
Result so far: 239716.1267605
Subtract 1065 from 1200 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Step 16:
The number 213 fits into 1350 6 times, leaving a remainder of 72.
Write down 6 as next digit of the result. 
Result so far: 239716.12676056
Subtracting 1278 from 1350 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

After the division, we end up with 239716.12676056 and a remainder of 7.2e-08.