639771 ÷ 84 
Let's see how many times 84 fits into 639771.

Advancing to step 1:
The number 84 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 84

On to step 2:
84 can be fit into 63 0 times, resulting in a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Include the next digit (9) from the dividend after 63, then repeat: 639 / 84

Moving on to step 3:
639 divided by 84 is 7 with a remainder of 51.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtracting 588 from 639 leaves us with 51.
Bring next digit (7) of the dividend behind the 51 and repeat the process: 517 / 84

Step 4:
If we divide 517 by 84, we get 6 and a remainder of 13.
The next digit of our result is 6. 
Result so far: 76.0
Subtract 504 from 517 to get 13.
Take the next digit (7) from the dividend and append it to 13, then repeat: 137 / 84

On to step 5:
84 can be fit into 137 1 times, resulting in a remainder of 53.
Put 1 as the next digit of the answer. 
Result so far: 761.0
If we subtract 84 from 137, we get 53.
Include the next digit (1) from the dividend after 53, then repeat: 531 / 84

Moving on to step 6:
The number 84 fits into 531 6 times, leaving a remainder of 27.
The number 6 becomes the next digit in our result. 
Result so far: 7616.0
Subtract 504 from 531 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 7:
270 divided by 84 is 3 with a remainder of 18.
The next digit of our result is 3. 
Result so far: 7616.3
Deduct 252 from 270 and we're left 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.

Step 8:
If we divide 180 by 84, we get 2 and a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 7616.32
Subtracting 168 from 180 leaves us 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.

Moving on to step 9:
84 goes into 120 1 times with a remainder of 36.
The next digit of our result is 1. 
Result so far: 7616.321
If we subtract 84 from 120, we 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.

Let's proceed to step 10:
If we divide 360 by 84, we get 4 and a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 7616.3214
If we take 336 away from 360, we end up 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.

Going ahead to step 11:
When dividing 240 by 84, we get 2 with a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 7616.32142
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.

Advancing to step 12:
84 can be fit into 720 8 times, resulting in a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 7616.321428
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.

Advancing to step 13:
84 goes into 480 5 times with a remainder of 60.
The number 5 becomes the next digit in our result. 
Result so far: 7616.3214285
Subtracting 420 from 480 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 14:
600 divided by 84 is 7 with a remainder of 12.
The next digit of our result is 7. 
Result so far: 7616.32142857
The remainder is 12 after subtracting 588 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Our division results in 7616.32142857 with a remaining 1.2e-08.