Let's divide 521610 by 7
We want to figure out the number of times 521610 can be divided by 7.

Step 1:
5 divided by 7 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 7

On to step 2:
If we divide 52 by 7, we get 7 and a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 49 from 52 leaves us with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 7

Let's proceed to step 3:
7 can be fit into 31 4 times, resulting in a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 74.0
If we subtract 28 from 31, we get 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 7

Advancing to step 4:
When dividing 36 by 7, we get 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 745.0
Subtracting 35 from 36 leaves us with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 7

On to step 5:
The number 7 fits into 11 1 times, leaving a remainder of 4.
The next digit of our result is 1. 
Result so far: 7451.0
Deduct 7 from 11 and we're left with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 7

Advancing to step 6:
7 can be fit into 40 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 74515.0
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.

Moving on to step 7:
The number 7 fits into 50 7 times, leaving a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 74515.7
Deduct 49 from 50 and we're left 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.

Let's proceed to step 8:
7 goes into 10 1 times with a remainder of 3.
The next digit of our result is 1. 
Result so far: 74515.71
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.

Advancing to step 9:
If we divide 30 by 7, we get 4 and a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 74515.714
Subtracting 28 from 30 leaves us 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.

Going ahead to step 10:
If we divide 20 by 7, we get 2 and a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 74515.7142
The remainder is 6 after subtracting 14 from 20.
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:
If we divide 60 by 7, we get 8 and a remainder of 4.
The next digit of our result is 8. 
Result so far: 74515.71428
Subtract 56 from 60 to 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.

Moving on to step 12:
The number 7 fits into 40 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 74515.714285
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.

On to step 13:
When dividing 50 by 7, we get 7 with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 74515.7142857
If we subtract 49 from 50, we 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.

Step 14:
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: 74515.71428571
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.

Our division results in 74515.71428571 with a remaining 3e-09.