61390910 divided by 900 
We want to divide 61390910 by 900.

On to step 1:
6 divided by 900 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 900

Going ahead to step 2:
900 can be fit into 61 0 times, resulting in a remainder of 61.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 61 and we're left with 61.
Bring next digit (3) of the dividend behind the 61 and repeat the process: 613 / 900

Let's proceed to step 3:
If we divide 613 by 900, we get 0 and a remainder of 613.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 613 leaves us with 613.
Include the next digit (9) from the dividend after 613, then repeat: 6139 / 900

On to step 4:
When dividing 6139 by 900, we get 6 with a remainder of 739.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 739 after subtracting 5400 from 6139.
Include the next digit (0) from the dividend after 739, then repeat: 7390 / 900

Moving on to step 5:
If we divide 7390 by 900, we get 8 and a remainder of 190.
Record the quotient 8 as the next digit in the result. 
Result so far: 68.0
Subtract 7200 from 7390 to get 190.
Append the next digit (9) from the dividend to 190 and continue with: 1909 / 900

Step 6:
900 can be fit into 1909 2 times, resulting in a remainder of 109.
Write down 2 as next digit of the result. 
Result so far: 682.0
Deduct 1800 from 1909 and we're left with 109.
Grab the next digit (1) from the dividend, add it to 109, then carry on: 1091 / 900

Advancing to step 7:
If we divide 1091 by 900, we get 1 and a remainder of 191.
Write down 1 as next digit of the result. 
Result so far: 6821.0
Subtract 900 from 1091 to get 191.
Append the next digit (0) from the dividend to 191 and continue with: 1910 / 900

Advancing to step 8:
When dividing 1910 by 900, we get 2 with a remainder of 110.
The next digit of our result is 2. 
Result so far: 68212.0
The remainder is 110 after subtracting 1800 from 1910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 9:
The number 900 fits into 1100 1 times, leaving a remainder of 200.
Put 1 as the next digit of the answer. 
Result so far: 68212.1
Subtract 900 from 1100 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 10:
When dividing 2000 by 900, we get 2 with a remainder of 200.
The number 2 becomes the next digit in our result. 
Result so far: 68212.12
Subtract 1800 from 2000 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 11:
The number 900 fits into 2000 2 times, leaving a remainder of 200.
Put 2 as the next digit of the answer. 
Result so far: 68212.122
If we subtract 1800 from 2000, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The quotient of the division is 68212.122, and the remainder is 0.02.