53638454 divided by 172 
The aim is to understand the frequency of 172 in 53638454.

Advancing to step 1:
The number 172 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 172

Step 2:
172 can be fit into 53 0 times, resulting in a remainder of 53.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 53 and we're left with 53.
Grab the next digit (6) from the dividend, add it to 53, then carry on: 536 / 172

Let's proceed to step 3:
When dividing 536 by 172, we get 3 with a remainder of 20.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 516 from 536 to get 20.
Grab the next digit (3) from the dividend, add it to 20, then carry on: 203 / 172

On to step 4:
172 can be fit into 203 1 times, resulting in a remainder of 31.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
Subtract 172 from 203 to get 31.
Grab the next digit (8) from the dividend, add it to 31, then carry on: 318 / 172

Step 5:
If we divide 318 by 172, we get 1 and a remainder of 146.
The next digit of our result is 1. 
Result so far: 311.0
Subtract 172 from 318 to get 146.
Append the next digit (4) from the dividend to 146 and continue with: 1464 / 172

On to step 6:
If we divide 1464 by 172, we get 8 and a remainder of 88.
Use 8 as the next digit of our solution. 
Result so far: 3118.0
Subtracting 1376 from 1464 leaves us with 88.
Fetch the next digit (5) from the dividend, attach it to 88 and continue: 885 / 172

Moving on to step 7:
172 can be fit into 885 5 times, resulting in a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 31185.0
If we subtract 860 from 885, we get 25.
Grab the next digit (4) from the dividend, add it to 25, then carry on: 254 / 172

Going ahead to step 8:
When dividing 254 by 172, we get 1 with a remainder of 82.
The next digit of our result is 1. 
Result so far: 311851.0
Subtract 172 from 254 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

On to step 9:
The number 172 fits into 820 4 times, leaving a remainder of 132.
Record the quotient 4 as the next digit in the result. 
Result so far: 311851.4
If we subtract 688 from 820, we get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 10:
172 goes into 1320 7 times with a remainder of 116.
Put 7 as the next digit of the answer. 
Result so far: 311851.47
Subtracting 1204 from 1320 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 11:
172 can be fit into 1160 6 times, resulting in a remainder of 128.
Write down 6 as next digit of the result. 
Result so far: 311851.476
Deduct 1032 from 1160 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Going ahead to step 12:
If we divide 1280 by 172, we get 7 and a remainder of 76.
Use 7 as the next digit of our solution. 
Result so far: 311851.4767
The remainder is 76 after subtracting 1204 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 13:
If we divide 760 by 172, we get 4 and a remainder of 72.
Record the quotient 4 as the next digit in the result. 
Result so far: 311851.47674
Subtract 688 from 760 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 14:
172 can be fit into 720 4 times, resulting in a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 311851.476744
If we take 688 away from 720, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 311851.476744 and a remainder of 3.2e-06.