We're dividing 31945503 by 7 
The aim is to understand the frequency of 7 in 31945503.

Let's proceed to step 1:
If we divide 3 by 7, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 7

Step 2:
7 can be fit into 31 4 times, resulting in a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 28 from 31, we get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 7

Moving on to step 3:
7 can be fit into 39 5 times, resulting in a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 45.0
Deduct 35 from 39 and we're left with 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 7

Step 4:
44 divided by 7 is 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 456.0
Subtracting 42 from 44 leaves us with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 7

Going ahead to step 5:
If we divide 25 by 7, we get 3 and a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 4563.0
Subtracting 21 from 25 leaves us with 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 7

Step 6:
7 goes into 45 6 times with a remainder of 3.
Use 6 as the next digit of our solution. 
Result so far: 45636.0
If we take 42 away from 45, we end up with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 7

Moving on to step 7:
The number 7 fits into 30 4 times, leaving a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 456364.0
Subtracting 28 from 30 leaves us with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 7

Let's proceed to step 8:
7 can be fit into 23 3 times, resulting in a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 4563643.0
Deduct 21 from 23 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.

On to step 9:
7 goes into 20 2 times with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 4563643.2
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 10:
60 divided by 7 is 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 4563643.28
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 11:
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: 4563643.285
Deduct 35 from 40 and we're left 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.

Advancing to step 12:
7 can be fit into 50 7 times, resulting in a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 4563643.2857
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.

On to step 13:
10 divided by 7 is 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 4563643.28571
If we subtract 7 from 10, we 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.

Moving on to step 14:
7 goes into 30 4 times with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 4563643.285714
Subtract 28 from 30 to 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.

Moving on to step 15:
20 divided by 7 is 2 with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 4563643.2857142
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.

Moving on to step 16:
7 goes into 60 8 times with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 4563643.28571428
Subtracting 56 from 60 leaves us 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.

Our division results in 4563643.28571428 with a remaining 4e-09.