We look at the division of 78300773 by 631 
The aim is to understand the frequency of 631 in 78300773.

Step 1:
631 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 (8) from the dividend and append it to 7, then repeat: 78 / 631

Moving on to step 2:
78 divided by 631 is 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Take the next digit (3) from the dividend and append it to 78, then repeat: 783 / 631

Let's proceed to step 3:
The number 631 fits into 783 1 times, leaving a remainder of 152.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 152 after subtracting 631 from 783.
Include the next digit (0) from the dividend after 152, then repeat: 1520 / 631

Let's proceed to step 4:
When dividing 1520 by 631, we get 2 with a remainder of 258.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 1262 from 1520 leaves us with 258.
Append the next digit (0) from the dividend to 258 and continue with: 2580 / 631

Going ahead to step 5:
If we divide 2580 by 631, we get 4 and a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 124.0
The remainder is 56 after subtracting 2524 from 2580.
Take the next digit (7) from the dividend and append it to 56, then repeat: 567 / 631

Moving on to step 6:
567 divided by 631 is 0 with a remainder of 567.
Record the quotient 0 as the next digit in the result. 
Result so far: 1240.0
Deduct 0 from 567 and we're left with 567.
Append the next digit (7) from the dividend to 567 and continue with: 5677 / 631

Let's proceed to step 7:
631 can be fit into 5677 8 times, resulting in a remainder of 629.
Write down 8 as next digit of the result. 
Result so far: 12408.0
If we subtract 5048 from 5677, we get 629.
Fetch the next digit (3) from the dividend, attach it to 629 and continue: 6293 / 631

Let's proceed to step 8:
631 goes into 6293 9 times with a remainder of 614.
Write down 9 as next digit of the result. 
Result so far: 124089.0
Subtract 5679 from 6293 to get 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Moving on to step 9:
6140 divided by 631 is 9 with a remainder of 461.
Use 9 as the next digit of our solution. 
Result so far: 124089.9
If we take 5679 away from 6140, we end up with 461.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4610, and continue the process.

Moving on to step 10:
631 can be fit into 4610 7 times, resulting in a remainder of 193.
Write down 7 as next digit of the result. 
Result so far: 124089.97
The remainder is 193 after subtracting 4417 from 4610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

On to step 11:
The number 631 fits into 1930 3 times, leaving a remainder of 37.
Use 3 as the next digit of our solution. 
Result so far: 124089.973
Subtracting 1893 from 1930 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 12:
When dividing 370 by 631, we get 0 with a remainder of 370.
The number 0 becomes the next digit in our result. 
Result so far: 124089.973
Subtract 0 from 370 to get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Moving on to step 13:
631 goes into 3700 5 times with a remainder of 545.
Record the quotient 5 as the next digit in the result. 
Result so far: 124089.97305
The remainder is 545 after subtracting 3155 from 3700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5450, and continue the process.

Moving on to step 14:
631 goes into 5450 8 times with a remainder of 402.
Write down 8 as next digit of the result. 
Result so far: 124089.973058
Deduct 5048 from 5450 and we're left with 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Advancing to step 15:
The number 631 fits into 4020 6 times, leaving a remainder of 234.
The number 6 becomes the next digit in our result. 
Result so far: 124089.9730586
The remainder is 234 after subtracting 3786 from 4020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

On to step 16:
If we divide 2340 by 631, we get 3 and a remainder of 447.
Use 3 as the next digit of our solution. 
Result so far: 124089.97305863
Subtract 1893 from 2340 to get 447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

Our division results in 124089.97305863 with a remaining 4.47e-07.