We're dividing 52609993 by 639 
We want to figure out the number of times 52609993 can be divided by 639.

Advancing to step 1:
5 divided by 639 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 639

Let's proceed to step 2:
If we divide 52 by 639, we get 0 and a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 52, we get 52.
Append the next digit (6) from the dividend to 52 and continue with: 526 / 639

Step 3:
The number 639 fits into 526 0 times, leaving a remainder of 526.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 526 to get 526.
Bring next digit (0) of the dividend behind the 526 and repeat the process: 5260 / 639

Moving on to step 4:
If we divide 5260 by 639, we get 8 and a remainder of 148.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 5112 from 5260 to get 148.
Bring next digit (9) of the dividend behind the 148 and repeat the process: 1489 / 639

Going ahead to step 5:
The number 639 fits into 1489 2 times, leaving a remainder of 211.
Put 2 as the next digit of the answer. 
Result so far: 82.0
Subtracting 1278 from 1489 leaves us with 211.
Grab the next digit (9) from the dividend, add it to 211, then carry on: 2119 / 639

On to step 6:
If we divide 2119 by 639, we get 3 and a remainder of 202.
The number 3 becomes the next digit in our result. 
Result so far: 823.0
If we subtract 1917 from 2119, we get 202.
Include the next digit (9) from the dividend after 202, then repeat: 2029 / 639

On to step 7:
639 can be fit into 2029 3 times, resulting in a remainder of 112.
Use 3 as the next digit of our solution. 
Result so far: 8233.0
If we subtract 1917 from 2029, we get 112.
Include the next digit (3) from the dividend after 112, then repeat: 1123 / 639

Going ahead to step 8:
639 can be fit into 1123 1 times, resulting in a remainder of 484.
Record the quotient 1 as the next digit in the result. 
Result so far: 82331.0
Subtracting 639 from 1123 leaves us with 484.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4840, and continue the process.

Going ahead to step 9:
639 can be fit into 4840 7 times, resulting in a remainder of 367.
Record the quotient 7 as the next digit in the result. 
Result so far: 82331.7
If we take 4473 away from 4840, we end up with 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

On to step 10:
When dividing 3670 by 639, we get 5 with a remainder of 475.
Record the quotient 5 as the next digit in the result. 
Result so far: 82331.75
If we take 3195 away from 3670, we end up with 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

On to step 11:
639 goes into 4750 7 times with a remainder of 277.
Use 7 as the next digit of our solution. 
Result so far: 82331.757
Deduct 4473 from 4750 and we're left with 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Moving on to step 12:
The number 639 fits into 2770 4 times, leaving a remainder of 214.
Put 4 as the next digit of the answer. 
Result so far: 82331.7574
The remainder is 214 after subtracting 2556 from 2770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Let's proceed to step 13:
639 can be fit into 2140 3 times, resulting in a remainder of 223.
The next digit of our result is 3. 
Result so far: 82331.75743
The remainder is 223 after subtracting 1917 from 2140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Moving on to step 14:
The number 639 fits into 2230 3 times, leaving a remainder of 313.
Put 3 as the next digit of the answer. 
Result so far: 82331.757433
If we take 1917 away from 2230, we end up with 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

The final outcome is 82331.757433, with a leftover of 3.13e-05.