We look at the division of 53061040 by 7 
The aim is to understand the frequency of 7 in 53061040.

Moving on to step 1:
If we divide 5 by 7, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 7

Let's proceed to step 2:
7 can be fit into 53 7 times, resulting in a remainder of 4.
The next digit of our result is 7. 
Result so far: 7.0
If we take 49 away from 53, we end up with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 7

On to step 3:
7 goes into 40 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 75.0
Subtracting 35 from 40 leaves us with 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 7

Let's proceed to step 4:
The number 7 fits into 56 8 times, leaving a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 758.0
Subtracting 56 from 56 leaves us with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 7

Advancing to step 5:
The number 7 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 7580.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 7

Let's proceed to step 6:
When dividing 10 by 7, we get 1 with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 75801.0
Deduct 7 from 10 and we're left with 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 7

Step 7:
The number 7 fits into 34 4 times, leaving a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 758014.0
Subtracting 28 from 34 leaves us with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 7

Step 8:
7 goes into 60 8 times with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 7580148.0
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.

Let's proceed to step 9:
The number 7 fits into 40 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 7580148.5
Subtract 35 from 40 to 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:
If we divide 50 by 7, we get 7 and a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 7580148.57
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 11:
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: 7580148.571
Subtracting 7 from 10 leaves us 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:
The number 7 fits into 30 4 times, leaving a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 7580148.5714
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.

Advancing to step 13:
7 goes into 20 2 times with a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 7580148.57142
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.

Moving on to step 14:
7 goes into 60 8 times with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 7580148.571428
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.

Step 15:
The number 7 fits into 40 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 7580148.5714285
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.

Let's proceed to step 16:
7 goes into 50 7 times with a remainder of 1.
The next digit of our result is 7. 
Result so far: 7580148.57142857
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.

After the division, we end up with 7580148.57142857 and a remainder of 1e-09.