20513599 ÷ 615 
We're looking to find how many times 615 goes into 20513599.

Going ahead to step 1:
If we divide 2 by 615, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 615

Advancing to step 2:
If we divide 20 by 615, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Include the next digit (5) from the dividend after 20, then repeat: 205 / 615

Going ahead to step 3:
When dividing 205 by 615, we get 0 with a remainder of 205.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 205 and we're left with 205.
Fetch the next digit (1) from the dividend, attach it to 205 and continue: 2051 / 615

Advancing to step 4:
2051 divided by 615 is 3 with a remainder of 206.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 206 after subtracting 1845 from 2051.
Grab the next digit (3) from the dividend, add it to 206, then carry on: 2063 / 615

Moving on to step 5:
615 can be fit into 2063 3 times, resulting in a remainder of 218.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
Subtract 1845 from 2063 to get 218.
Bring next digit (5) of the dividend behind the 218 and repeat the process: 2185 / 615

Step 6:
When dividing 2185 by 615, we get 3 with a remainder of 340.
Put 3 as the next digit of the answer. 
Result so far: 333.0
If we take 1845 away from 2185, we end up with 340.
Grab the next digit (9) from the dividend, add it to 340, then carry on: 3409 / 615

Going ahead to step 7:
615 goes into 3409 5 times with a remainder of 334.
Record the quotient 5 as the next digit in the result. 
Result so far: 3335.0
If we subtract 3075 from 3409, we get 334.
Grab the next digit (9) from the dividend, add it to 334, then carry on: 3349 / 615

Going ahead to step 8:
When dividing 3349 by 615, we get 5 with a remainder of 274.
Record the quotient 5 as the next digit in the result. 
Result so far: 33355.0
Subtract 3075 from 3349 to get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

On to step 9:
615 can be fit into 2740 4 times, resulting in a remainder of 280.
Use 4 as the next digit of our solution. 
Result so far: 33355.4
Deduct 2460 from 2740 and we're left with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Step 10:
615 can be fit into 2800 4 times, resulting in a remainder of 340.
The next digit of our result is 4. 
Result so far: 33355.44
The remainder is 340 after subtracting 2460 from 2800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

The final result is 33355.44 with a remainder of 0.34.