87634029 divided by 391 
The aim is to understand the frequency of 391 in 87634029.

Let's proceed to step 1:
391 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 391

On to step 2:
87 divided by 391 is 0 with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 87 to get 87.
Include the next digit (6) from the dividend after 87, then repeat: 876 / 391

Step 3:
876 divided by 391 is 2 with a remainder of 94.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 94 after subtracting 782 from 876.
Take the next digit (3) from the dividend and append it to 94, then repeat: 943 / 391

Let's proceed to step 4:
943 divided by 391 is 2 with a remainder of 161.
Write down 2 as next digit of the result. 
Result so far: 22.0
Subtracting 782 from 943 leaves us with 161.
Include the next digit (4) from the dividend after 161, then repeat: 1614 / 391

Let's proceed to step 5:
1614 divided by 391 is 4 with a remainder of 50.
Write down 4 as next digit of the result. 
Result so far: 224.0
If we take 1564 away from 1614, we end up with 50.
Include the next digit (0) from the dividend after 50, then repeat: 500 / 391

Step 6:
500 divided by 391 is 1 with a remainder of 109.
Put 1 as the next digit of the answer. 
Result so far: 2241.0
Deduct 391 from 500 and we're left with 109.
Bring next digit (2) of the dividend behind the 109 and repeat the process: 1092 / 391

Going ahead to step 7:
391 goes into 1092 2 times with a remainder of 310.
Record the quotient 2 as the next digit in the result. 
Result so far: 22412.0
If we subtract 782 from 1092, we get 310.
Bring next digit (9) of the dividend behind the 310 and repeat the process: 3109 / 391

Step 8:
The number 391 fits into 3109 7 times, leaving a remainder of 372.
The number 7 becomes the next digit in our result. 
Result so far: 224127.0
If we subtract 2737 from 3109, we get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Let's proceed to step 9:
The number 391 fits into 3720 9 times, leaving a remainder of 201.
The next digit of our result is 9. 
Result so far: 224127.9
If we subtract 3519 from 3720, we get 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Moving on to step 10:
The number 391 fits into 2010 5 times, leaving a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 224127.95
Subtracting 1955 from 2010 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 11:
When dividing 550 by 391, we get 1 with a remainder of 159.
Put 1 as the next digit of the answer. 
Result so far: 224127.951
The remainder is 159 after subtracting 391 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Advancing to step 12:
If we divide 1590 by 391, we get 4 and a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 224127.9514
Deduct 1564 from 1590 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 13:
The number 391 fits into 260 0 times, leaving a remainder of 260.
Write down 0 as next digit of the result. 
Result so far: 224127.9514
Subtracting 0 from 260 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Moving on to step 14:
2600 divided by 391 is 6 with a remainder of 254.
Put 6 as the next digit of the answer. 
Result so far: 224127.951406
Deduct 2346 from 2600 and we're left with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

On to step 15:
If we divide 2540 by 391, we get 6 and a remainder of 194.
Record the quotient 6 as the next digit in the result. 
Result so far: 224127.9514066
Subtract 2346 from 2540 to get 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

The final result is 224127.9514066 with a remainder of 1.94e-06.