Let's divide 7415844 by 391
The aim is to understand the frequency of 391 in 7415844.

Step 1:
The number 391 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 391

Let's proceed to step 2:
The number 391 fits into 74 0 times, leaving a remainder of 74.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 74, we end up with 74.
Fetch the next digit (1) from the dividend, attach it to 74 and continue: 741 / 391

Moving on to step 3:
If we divide 741 by 391, we get 1 and a remainder of 350.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 350 after subtracting 391 from 741.
Fetch the next digit (5) from the dividend, attach it to 350 and continue: 3505 / 391

Step 4:
If we divide 3505 by 391, we get 8 and a remainder of 377.
Write down 8 as next digit of the result. 
Result so far: 18.0
If we subtract 3128 from 3505, we get 377.
Append the next digit (8) from the dividend to 377 and continue with: 3778 / 391

Moving on to step 5:
391 goes into 3778 9 times with a remainder of 259.
Use 9 as the next digit of our solution. 
Result so far: 189.0
If we take 3519 away from 3778, we end up with 259.
Take the next digit (4) from the dividend and append it to 259, then repeat: 2594 / 391

Going ahead to step 6:
391 can be fit into 2594 6 times, resulting in a remainder of 248.
The next digit of our result is 6. 
Result so far: 1896.0
Subtract 2346 from 2594 to get 248.
Fetch the next digit (4) from the dividend, attach it to 248 and continue: 2484 / 391

Going ahead to step 7:
When dividing 2484 by 391, we get 6 with a remainder of 138.
Record the quotient 6 as the next digit in the result. 
Result so far: 18966.0
Subtracting 2346 from 2484 leaves us with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

On to step 8:
391 goes into 1380 3 times with a remainder of 207.
Put 3 as the next digit of the answer. 
Result so far: 18966.3
The remainder is 207 after subtracting 1173 from 1380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

Advancing to step 9:
391 can be fit into 2070 5 times, resulting in a remainder of 115.
Record the quotient 5 as the next digit in the result. 
Result so far: 18966.35
Subtracting 1955 from 2070 leaves us with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Going ahead to step 10:
391 can be fit into 1150 2 times, resulting in a remainder of 368.
Write down 2 as next digit of the result. 
Result so far: 18966.352
If we take 782 away from 1150, we end up with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

On to step 11:
If we divide 3680 by 391, we get 9 and a remainder of 161.
Put 9 as the next digit of the answer. 
Result so far: 18966.3529
Subtract 3519 from 3680 to get 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Moving on to step 12:
391 goes into 1610 4 times with a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 18966.35294
Subtract 1564 from 1610 to get 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 13:
391 can be fit into 460 1 times, resulting in a remainder of 69.
The next digit of our result is 1. 
Result so far: 18966.352941
The remainder is 69 after subtracting 391 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 14:
391 can be fit into 690 1 times, resulting in a remainder of 299.
Put 1 as the next digit of the answer. 
Result so far: 18966.3529411
If we subtract 391 from 690, we get 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Our division results in 18966.3529411 with a remaining 2.99e-06.