Let's divide 644598 by 39
We want to figure out the number of times 644598 can be divided by 39.

Moving on to step 1:
When dividing 6 by 39, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 39

Going ahead to step 2:
64 divided by 39 is 1 with a remainder of 25.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 25 after subtracting 39 from 64.
Take the next digit (4) from the dividend and append it to 25, then repeat: 254 / 39

Advancing to step 3:
39 goes into 254 6 times with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 16.0
The remainder is 20 after subtracting 234 from 254.
Include the next digit (5) from the dividend after 20, then repeat: 205 / 39

Going ahead to step 4:
205 divided by 39 is 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 165.0
If we subtract 195 from 205, we get 10.
Include the next digit (9) from the dividend after 10, then repeat: 109 / 39

Going ahead to step 5:
When dividing 109 by 39, we get 2 with a remainder of 31.
Write down 2 as next digit of the result. 
Result so far: 1652.0
Deduct 78 from 109 and we're left with 31.
Take the next digit (8) from the dividend and append it to 31, then repeat: 318 / 39

Moving on to step 6:
The number 39 fits into 318 8 times, leaving a remainder of 6.
The next digit of our result is 8. 
Result so far: 16528.0
Deduct 312 from 318 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
39 can be fit into 60 1 times, resulting in a remainder of 21.
The next digit of our result is 1. 
Result so far: 16528.1
If we subtract 39 from 60, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 8:
39 goes into 210 5 times with a remainder of 15.
The next digit of our result is 5. 
Result so far: 16528.15
Subtracting 195 from 210 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 9:
If we divide 150 by 39, we get 3 and a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 16528.153
The remainder is 33 after subtracting 117 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 10:
330 divided by 39 is 8 with a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 16528.1538
If we subtract 312 from 330, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 11:
39 can be fit into 180 4 times, resulting in a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 16528.15384
Subtracting 156 from 180 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 12:
The number 39 fits into 240 6 times, leaving a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 16528.153846
If we take 234 away from 240, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 13:
39 can be fit into 60 1 times, resulting in a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 16528.1538461
If we subtract 39 from 60, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 14:
210 divided by 39 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 16528.15384615
Deduct 195 from 210 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 16528.15384615 with a remainder of 1.5e-08.