We divide 917591 by 7
The aim is to understand the frequency of 7 in 917591.

Moving on to step 1:
If we divide 9 by 7, we get 1 and a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 7 from 9 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 7

Let's proceed to step 2:
When dividing 21 by 7, we get 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 0 after subtracting 21 from 21.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 7

On to step 3:
7 goes into 7 1 times with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 131.0
Deduct 7 from 7 and we're left with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 7

Going ahead to step 4:
7 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 1310.0
The remainder is 5 after subtracting 0 from 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 7

Moving on to step 5:
7 can be fit into 59 8 times, resulting in a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 13108.0
Subtracting 56 from 59 leaves us with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 7

Advancing to step 6:
If we divide 31 by 7, we get 4 and a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 131084.0
The remainder is 3 after subtracting 28 from 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
30 divided by 7 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 131084.4
If we take 28 away from 30, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
The number 7 fits into 20 2 times, leaving a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 131084.42
Subtract 14 from 20 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
7 goes into 60 8 times with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 131084.428
The remainder is 4 after subtracting 56 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
If we divide 40 by 7, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 131084.4285
If we take 35 away from 40, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 11:
7 goes into 50 7 times with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 131084.42857
If we take 49 away from 50, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 12:
7 can be fit into 10 1 times, resulting in a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 131084.428571
The remainder is 3 after subtracting 7 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 13:
30 divided by 7 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 131084.4285714
If we subtract 28 from 30, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
When dividing 20 by 7, we get 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 131084.42857142
Deduct 14 from 20 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 131084.42857142 with a remainder of 6e-09.