7970921 divided by 521 
Our goal is to divide 7970921 by 521.

Advancing to step 1:
If we divide 7 by 521, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 521

Going ahead to step 2:
The number 521 fits into 79 0 times, leaving a remainder of 79.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 79, we end up with 79.
Fetch the next digit (7) from the dividend, attach it to 79 and continue: 797 / 521

Let's proceed to step 3:
If we divide 797 by 521, we get 1 and a remainder of 276.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 521 from 797 leaves us with 276.
Append the next digit (0) from the dividend to 276 and continue with: 2760 / 521

Advancing to step 4:
The number 521 fits into 2760 5 times, leaving a remainder of 155.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Subtract 2605 from 2760 to get 155.
Fetch the next digit (9) from the dividend, attach it to 155 and continue: 1559 / 521

Moving on to step 5:
521 goes into 1559 2 times with a remainder of 517.
The next digit of our result is 2. 
Result so far: 152.0
The remainder is 517 after subtracting 1042 from 1559.
Bring next digit (2) of the dividend behind the 517 and repeat the process: 5172 / 521

On to step 6:
If we divide 5172 by 521, we get 9 and a remainder of 483.
Record the quotient 9 as the next digit in the result. 
Result so far: 1529.0
If we subtract 4689 from 5172, we get 483.
Append the next digit (1) from the dividend to 483 and continue with: 4831 / 521

On to step 7:
521 can be fit into 4831 9 times, resulting in a remainder of 142.
The number 9 becomes the next digit in our result. 
Result so far: 15299.0
Subtracting 4689 from 4831 leaves us with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Step 8:
If we divide 1420 by 521, we get 2 and a remainder of 378.
Write down 2 as next digit of the result. 
Result so far: 15299.2
The remainder is 378 after subtracting 1042 from 1420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Step 9:
When dividing 3780 by 521, we get 7 with a remainder of 133.
The next digit of our result is 7. 
Result so far: 15299.27
If we subtract 3647 from 3780, we get 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Let's proceed to step 10:
521 goes into 1330 2 times with a remainder of 288.
The next digit of our result is 2. 
Result so far: 15299.272
Subtracting 1042 from 1330 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

On to step 11:
521 goes into 2880 5 times with a remainder of 275.
Record the quotient 5 as the next digit in the result. 
Result so far: 15299.2725
Subtract 2605 from 2880 to get 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Let's proceed to step 12:
521 can be fit into 2750 5 times, resulting in a remainder of 145.
Put 5 as the next digit of the answer. 
Result so far: 15299.27255
Subtracting 2605 from 2750 leaves us with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

After the division, we end up with 15299.27255 and a remainder of 0.000145.