76981391 ÷ 172 
The aim is to understand the frequency of 172 in 76981391.

Moving on to step 1:
172 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 172

On to step 2:
76 divided by 172 is 0 with a remainder of 76.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 76 to get 76.
Append the next digit (9) from the dividend to 76 and continue with: 769 / 172

Going ahead to step 3:
The number 172 fits into 769 4 times, leaving a remainder of 81.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 688 from 769 leaves us with 81.
Take the next digit (8) from the dividend and append it to 81, then repeat: 818 / 172

Going ahead to step 4:
The number 172 fits into 818 4 times, leaving a remainder of 130.
Record the quotient 4 as the next digit in the result. 
Result so far: 44.0
Subtracting 688 from 818 leaves us with 130.
Include the next digit (1) from the dividend after 130, then repeat: 1301 / 172

Step 5:
If we divide 1301 by 172, we get 7 and a remainder of 97.
Record the quotient 7 as the next digit in the result. 
Result so far: 447.0
If we take 1204 away from 1301, we end up with 97.
Bring next digit (3) of the dividend behind the 97 and repeat the process: 973 / 172

Moving on to step 6:
If we divide 973 by 172, we get 5 and a remainder of 113.
Record the quotient 5 as the next digit in the result. 
Result so far: 4475.0
Deduct 860 from 973 and we're left with 113.
Bring next digit (9) of the dividend behind the 113 and repeat the process: 1139 / 172

Moving on to step 7:
If we divide 1139 by 172, we get 6 and a remainder of 107.
The next digit of our result is 6. 
Result so far: 44756.0
If we subtract 1032 from 1139, we get 107.
Grab the next digit (1) from the dividend, add it to 107, then carry on: 1071 / 172

Going ahead to step 8:
When dividing 1071 by 172, we get 6 with a remainder of 39.
The next digit of our result is 6. 
Result so far: 447566.0
If we take 1032 away from 1071, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 9:
390 divided by 172 is 2 with a remainder of 46.
The next digit of our result is 2. 
Result so far: 447566.2
Subtracting 344 from 390 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 10:
When dividing 460 by 172, we get 2 with a remainder of 116.
The number 2 becomes the next digit in our result. 
Result so far: 447566.22
The remainder is 116 after subtracting 344 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Our division results in 447566.22 with a remaining 0.116.