315891 ÷ 7 
The aim is to understand the frequency of 7 in 315891.

Moving on to step 1:
7 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 7

Moving on to step 2:
When dividing 31 by 7, we get 4 with a remainder of 3.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 28 away from 31, we end up with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 7

On to step 3:
35 divided by 7 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 45.0
The remainder is 0 after subtracting 35 from 35.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 7

Step 4:
8 divided by 7 is 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 451.0
Deduct 7 from 8 and we're left with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 7

Moving on to step 5:
19 divided by 7 is 2 with a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 4512.0
Deduct 14 from 19 and we're left with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 7

Let's proceed to step 6:
When dividing 51 by 7, we get 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 45127.0
Deduct 49 from 51 and we're left 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 7:
If we divide 20 by 7, we get 2 and a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 45127.2
If we subtract 14 from 20, we 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.

Step 8:
60 divided by 7 is 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 45127.28
If we subtract 56 from 60, we get 4.
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 9:
40 divided by 7 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 45127.285
If we subtract 35 from 40, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 10:
7 goes into 50 7 times with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 45127.2857
Subtract 49 from 50 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 11:
When dividing 10 by 7, we get 1 with a remainder of 3.
The next digit of our result is 1. 
Result so far: 45127.28571
Deduct 7 from 10 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 12:
7 can be fit into 30 4 times, resulting in a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 45127.285714
The remainder is 2 after subtracting 28 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 13:
7 can be fit into 20 2 times, resulting in a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 45127.2857142
If we take 14 away from 20, we end up 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.

Advancing to step 14:
7 goes into 60 8 times with a remainder of 4.
The next digit of our result is 8. 
Result so far: 45127.28571428
Deduct 56 from 60 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 45127.28571428 and a remainder of 4e-09.