We're dividing 50986949 by 172 
The aim is to understand the frequency of 172 in 50986949.

Step 1:
When dividing 5 by 172, we get 0 with 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 (0) from the dividend, attach it to 5 and continue: 50 / 172

Step 2:
50 divided by 172 is 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 50 to get 50.
Append the next digit (9) from the dividend to 50 and continue with: 509 / 172

Let's proceed to step 3:
172 goes into 509 2 times with a remainder of 165.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 344 from 509, we get 165.
Take the next digit (8) from the dividend and append it to 165, then repeat: 1658 / 172

Let's proceed to step 4:
1658 divided by 172 is 9 with a remainder of 110.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
The remainder is 110 after subtracting 1548 from 1658.
Grab the next digit (6) from the dividend, add it to 110, then carry on: 1106 / 172

Moving on to step 5:
172 goes into 1106 6 times with a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 296.0
Subtract 1032 from 1106 to get 74.
Take the next digit (9) from the dividend and append it to 74, then repeat: 749 / 172

Moving on to step 6:
172 can be fit into 749 4 times, resulting in a remainder of 61.
The next digit of our result is 4. 
Result so far: 2964.0
The remainder is 61 after subtracting 688 from 749.
Include the next digit (4) from the dividend after 61, then repeat: 614 / 172

Going ahead to step 7:
If we divide 614 by 172, we get 3 and a remainder of 98.
Use 3 as the next digit of our solution. 
Result so far: 29643.0
Deduct 516 from 614 and we're left with 98.
Append the next digit (9) from the dividend to 98 and continue with: 989 / 172

On to step 8:
172 can be fit into 989 5 times, resulting in a remainder of 129.
Use 5 as the next digit of our solution. 
Result so far: 296435.0
Subtracting 860 from 989 leaves us 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 9:
1290 divided by 172 is 7 with a remainder of 86.
The next digit of our result is 7. 
Result so far: 296435.7
Subtract 1204 from 1290 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Let's proceed to step 10:
860 divided by 172 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 296435.75
Subtracting 860 from 860 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
172 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 296435.75
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 12:
When dividing 0 by 172, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 296435.75
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 296435.75, and the remainder is 0.0.