644250 ÷ 61 
Let's see how many times 61 fits into 644250.

On to step 1:
The number 61 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 61

Step 2:
61 can be fit into 64 1 times, resulting in a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 61 from 64, we get 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 61

Moving on to step 3:
61 can be fit into 34 0 times, resulting in a remainder of 34.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Deduct 0 from 34 and we're left with 34.
Include the next digit (2) from the dividend after 34, then repeat: 342 / 61

Step 4:
61 can be fit into 342 5 times, resulting in a remainder of 37.
Record the quotient 5 as the next digit in the result. 
Result so far: 105.0
If we subtract 305 from 342, we get 37.
Append the next digit (5) from the dividend to 37 and continue with: 375 / 61

On to step 5:
375 divided by 61 is 6 with a remainder of 9.
Write down 6 as next digit of the result. 
Result so far: 1056.0
If we take 366 away from 375, we end up with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 61

Let's proceed to step 6:
90 divided by 61 is 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 10561.0
If we subtract 61 from 90, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 7:
61 can be fit into 290 4 times, resulting in a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 10561.4
Subtracting 244 from 290 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 8:
61 goes into 460 7 times with a remainder of 33.
The number 7 becomes the next digit in our result. 
Result so far: 10561.47
The remainder is 33 after subtracting 427 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 9:
If we divide 330 by 61, we get 5 and a remainder of 25.
The next digit of our result is 5. 
Result so far: 10561.475
If we subtract 305 from 330, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 10:
61 goes into 250 4 times with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 10561.4754
The remainder is 6 after subtracting 244 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 11:
60 divided by 61 is 0 with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 10561.4754
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 12:
The number 61 fits into 600 9 times, leaving a remainder of 51.
The next digit of our result is 9. 
Result so far: 10561.475409
Subtract 549 from 600 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 13:
When dividing 510 by 61, we get 8 with a remainder of 22.
The next digit of our result is 8. 
Result so far: 10561.4754098
If we subtract 488 from 510, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 14:
The number 61 fits into 220 3 times, leaving a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 10561.47540983
Subtracting 183 from 220 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

The final result is 10561.47540983 with a remainder of 3.7e-08.