We divide 639855 by 84
Our goal is to divide 639855 by 84.

Step 1:
When dividing 6 by 84, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 84

Moving on to step 2:
84 goes into 63 0 times with a remainder of 63.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Bring next digit (9) of the dividend behind the 63 and repeat the process: 639 / 84

On to step 3:
When dividing 639 by 84, we get 7 with a remainder of 51.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtract 588 from 639 to get 51.
Grab the next digit (8) from the dividend, add it to 51, then carry on: 518 / 84

Moving on to step 4:
84 can be fit into 518 6 times, resulting in a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 76.0
Deduct 504 from 518 and we're left with 14.
Grab the next digit (5) from the dividend, add it to 14, then carry on: 145 / 84

Let's proceed to step 5:
If we divide 145 by 84, we get 1 and a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 761.0
Subtracting 84 from 145 leaves us with 61.
Grab the next digit (5) from the dividend, add it to 61, then carry on: 615 / 84

Let's proceed to step 6:
84 goes into 615 7 times with a remainder of 27.
Use 7 as the next digit of our solution. 
Result so far: 7617.0
Subtracting 588 from 615 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 7:
When dividing 270 by 84, we get 3 with a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 7617.3
If we take 252 away from 270, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 8:
If we divide 180 by 84, we get 2 and a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 7617.32
If we take 168 away from 180, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
The number 84 fits into 120 1 times, leaving a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 7617.321
Subtract 84 from 120 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 10:
360 divided by 84 is 4 with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 7617.3214
If we subtract 336 from 360, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 11:
84 goes into 240 2 times with a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 7617.32142
Deduct 168 from 240 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 12:
When dividing 720 by 84, we get 8 with a remainder of 48.
The next digit of our result is 8. 
Result so far: 7617.321428
The remainder is 48 after subtracting 672 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 13:
When dividing 480 by 84, we get 5 with a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 7617.3214285
Subtract 420 from 480 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 14:
If we divide 600 by 84, we get 7 and a remainder of 12.
Use 7 as the next digit of our solution. 
Result so far: 7617.32142857
Deduct 588 from 600 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 7617.32142857, with a leftover of 1.2e-08.