61347686 ÷ 639 
We want to figure out the number of times 61347686 can be divided by 639.

On to step 1:
When dividing 6 by 639, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 639

Step 2:
When dividing 61 by 639, we get 0 with a remainder of 61.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 61 after subtracting 0 from 61.
Include the next digit (3) from the dividend after 61, then repeat: 613 / 639

On to step 3:
613 divided by 639 is 0 with a remainder of 613.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 613 to get 613.
Grab the next digit (4) from the dividend, add it to 613, then carry on: 6134 / 639

Going ahead to step 4:
The number 639 fits into 6134 9 times, leaving a remainder of 383.
The next digit of our result is 9. 
Result so far: 9.0
If we subtract 5751 from 6134, we get 383.
Grab the next digit (7) from the dividend, add it to 383, then carry on: 3837 / 639

Let's proceed to step 5:
639 goes into 3837 6 times with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 96.0
Deduct 3834 from 3837 and we're left with 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 639

Advancing to step 6:
639 can be fit into 36 0 times, resulting in a remainder of 36.
Record the quotient 0 as the next digit in the result. 
Result so far: 960.0
Deduct 0 from 36 and we're left with 36.
Include the next digit (8) from the dividend after 36, then repeat: 368 / 639

Going ahead to step 7:
639 can be fit into 368 0 times, resulting in a remainder of 368.
Write down 0 as next digit of the result. 
Result so far: 9600.0
Subtract 0 from 368 to get 368.
Grab the next digit (6) from the dividend, add it to 368, then carry on: 3686 / 639

Step 8:
When dividing 3686 by 639, we get 5 with a remainder of 491.
The next digit of our result is 5. 
Result so far: 96005.0
If we subtract 3195 from 3686, we get 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

Advancing to step 9:
The number 639 fits into 4910 7 times, leaving a remainder of 437.
Write down 7 as next digit of the result. 
Result so far: 96005.7
Subtract 4473 from 4910 to get 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Going ahead to step 10:
If we divide 4370 by 639, we get 6 and a remainder of 536.
Write down 6 as next digit of the result. 
Result so far: 96005.76
If we take 3834 away from 4370, we end up with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Moving on to step 11:
639 goes into 5360 8 times with a remainder of 248.
The next digit of our result is 8. 
Result so far: 96005.768
Subtract 5112 from 5360 to get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Let's proceed to step 12:
639 can be fit into 2480 3 times, resulting in a remainder of 563.
Use 3 as the next digit of our solution. 
Result so far: 96005.7683
Subtracting 1917 from 2480 leaves us with 563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

Step 13:
5630 divided by 639 is 8 with a remainder of 518.
Record the quotient 8 as the next digit in the result. 
Result so far: 96005.76838
The remainder is 518 after subtracting 5112 from 5630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Let's proceed to step 14:
639 goes into 5180 8 times with a remainder of 68.
Put 8 as the next digit of the answer. 
Result so far: 96005.768388
Subtract 5112 from 5180 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The final outcome is 96005.768388, with a leftover of 6.8e-06.