We divide 971430 by 7
The aim is to understand the frequency of 7 in 971430.

On to step 1:
When dividing 9 by 7, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 7 from 9 to get 2.
Append the next digit (7) from the dividend to 2 and continue with: 27 / 7

On to step 2:
If we divide 27 by 7, we get 3 and a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 21 from 27 and we're left with 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 7

Step 3:
61 divided by 7 is 8 with a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 138.0
If we take 56 away from 61, we end up with 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 7

Moving on to step 4:
When dividing 54 by 7, we get 7 with a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 1387.0
Subtracting 49 from 54 leaves us with 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 7

Moving on to step 5:
If we divide 53 by 7, we get 7 and a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 13877.0
If we take 49 away from 53, we end up with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 7

On to step 6:
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: 138775.0
The remainder is 5 after subtracting 35 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
The number 7 fits into 50 7 times, leaving a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 138775.7
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.

Advancing to step 8:
If we divide 10 by 7, we get 1 and a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 138775.71
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.

Let's proceed to step 9:
7 can be fit into 30 4 times, resulting in a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 138775.714
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.

On to step 10:
7 can be fit into 20 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 138775.7142
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.

Going ahead to step 11:
When dividing 60 by 7, we get 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 138775.71428
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.

Going ahead to step 12:
7 goes into 40 5 times with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 138775.714285
The remainder is 5 after subtracting 35 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 13:
50 divided by 7 is 7 with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 138775.7142857
The remainder is 1 after subtracting 49 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 14:
When dividing 10 by 7, we get 1 with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 138775.71428571
Subtract 7 from 10 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

After the division, we end up with 138775.71428571 and a remainder of 3e-09.