We divide 21160725 by 331
We want to divide 21160725 by 331.

Going ahead to step 1:
When dividing 2 by 331, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 331

On to step 2:
331 goes into 21 0 times with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Take the next digit (1) from the dividend and append it to 21, then repeat: 211 / 331

Advancing to step 3:
331 goes into 211 0 times with a remainder of 211.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 211 and we're left with 211.
Append the next digit (6) from the dividend to 211 and continue with: 2116 / 331

Advancing to step 4:
If we divide 2116 by 331, we get 6 and a remainder of 130.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 1986 from 2116 to get 130.
Include the next digit (0) from the dividend after 130, then repeat: 1300 / 331

Moving on to step 5:
331 goes into 1300 3 times with a remainder of 307.
The next digit of our result is 3. 
Result so far: 63.0
Subtract 993 from 1300 to get 307.
Take the next digit (7) from the dividend and append it to 307, then repeat: 3077 / 331

Going ahead to step 6:
331 can be fit into 3077 9 times, resulting in a remainder of 98.
Use 9 as the next digit of our solution. 
Result so far: 639.0
Deduct 2979 from 3077 and we're left with 98.
Bring next digit (2) of the dividend behind the 98 and repeat the process: 982 / 331

Moving on to step 7:
982 divided by 331 is 2 with a remainder of 320.
Record the quotient 2 as the next digit in the result. 
Result so far: 6392.0
If we subtract 662 from 982, we get 320.
Bring next digit (5) of the dividend behind the 320 and repeat the process: 3205 / 331

On to step 8:
If we divide 3205 by 331, we get 9 and a remainder of 226.
The next digit of our result is 9. 
Result so far: 63929.0
Subtracting 2979 from 3205 leaves us with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Let's proceed to step 9:
331 can be fit into 2260 6 times, resulting in a remainder of 274.
Record the quotient 6 as the next digit in the result. 
Result so far: 63929.6
Deduct 1986 from 2260 and we're left with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Step 10:
When dividing 2740 by 331, we get 8 with a remainder of 92.
Record the quotient 8 as the next digit in the result. 
Result so far: 63929.68
Deduct 2648 from 2740 and we're left with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 11:
331 goes into 920 2 times with a remainder of 258.
Put 2 as the next digit of the answer. 
Result so far: 63929.682
Subtract 662 from 920 to get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Moving on to step 12:
If we divide 2580 by 331, we get 7 and a remainder of 263.
Write down 7 as next digit of the result. 
Result so far: 63929.6827
The remainder is 263 after subtracting 2317 from 2580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2630, and continue the process.

Advancing to step 13:
331 goes into 2630 7 times with a remainder of 313.
Use 7 as the next digit of our solution. 
Result so far: 63929.68277
The remainder is 313 after subtracting 2317 from 2630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

The final outcome is 63929.68277, with a leftover of 0.000313.