12061215 divided by 510 
We're looking to find how many times 510 goes into 12061215.

Going ahead to step 1:
510 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 510

Step 2:
If we divide 12 by 510, we get 0 and a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 510

Going ahead to step 3:
The number 510 fits into 120 0 times, leaving a remainder of 120.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 120 leaves us with 120.
Grab the next digit (6) from the dividend, add it to 120, then carry on: 1206 / 510

Step 4:
When dividing 1206 by 510, we get 2 with a remainder of 186.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1020 from 1206 leaves us with 186.
Bring next digit (1) of the dividend behind the 186 and repeat the process: 1861 / 510

Moving on to step 5:
510 goes into 1861 3 times with a remainder of 331.
Put 3 as the next digit of the answer. 
Result so far: 23.0
If we take 1530 away from 1861, we end up with 331.
Include the next digit (2) from the dividend after 331, then repeat: 3312 / 510

Moving on to step 6:
3312 divided by 510 is 6 with a remainder of 252.
Record the quotient 6 as the next digit in the result. 
Result so far: 236.0
Subtracting 3060 from 3312 leaves us with 252.
Include the next digit (1) from the dividend after 252, then repeat: 2521 / 510

Let's proceed to step 7:
When dividing 2521 by 510, we get 4 with a remainder of 481.
Write down 4 as next digit of the result. 
Result so far: 2364.0
If we subtract 2040 from 2521, we get 481.
Bring next digit (5) of the dividend behind the 481 and repeat the process: 4815 / 510

Let's proceed to step 8:
When dividing 4815 by 510, we get 9 with a remainder of 225.
The number 9 becomes the next digit in our result. 
Result so far: 23649.0
Deduct 4590 from 4815 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 9:
510 goes into 2250 4 times with a remainder of 210.
The next digit of our result is 4. 
Result so far: 23649.4
If we subtract 2040 from 2250, we get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Step 10:
2100 divided by 510 is 4 with a remainder of 60.
The next digit of our result is 4. 
Result so far: 23649.44
If we take 2040 away from 2100, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The quotient of the division is 23649.44, and the remainder is 0.06.