644988 divided by 84 
Let's see how many times 84 fits into 644988.

Step 1:
84 can be fit into 6 0 times, resulting in 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.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 84

On to step 2:
64 divided by 84 is 0 with a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Grab the next digit (4) from the dividend, add it to 64, then carry on: 644 / 84

Moving on to step 3:
When dividing 644 by 84, we get 7 with a remainder of 56.
Write down 7 as next digit of the result. 
Result so far: 7.0
Deduct 588 from 644 and we're left with 56.
Grab the next digit (9) from the dividend, add it to 56, then carry on: 569 / 84

Advancing to step 4:
The number 84 fits into 569 6 times, leaving a remainder of 65.
Record the quotient 6 as the next digit in the result. 
Result so far: 76.0
Deduct 504 from 569 and we're left with 65.
Take the next digit (8) from the dividend and append it to 65, then repeat: 658 / 84

On to step 5:
If we divide 658 by 84, we get 7 and a remainder of 70.
Record the quotient 7 as the next digit in the result. 
Result so far: 767.0
If we take 588 away from 658, we end up with 70.
Grab the next digit (8) from the dividend, add it to 70, then carry on: 708 / 84

On to step 6:
If we divide 708 by 84, we get 8 and a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 7678.0
Subtracting 672 from 708 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 7:
The number 84 fits into 360 4 times, leaving a remainder of 24.
The next digit of our result is 4. 
Result so far: 7678.4
Deduct 336 from 360 and we're left 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.

Advancing to step 8:
The number 84 fits into 240 2 times, leaving a remainder of 72.
Put 2 as the next digit of the answer. 
Result so far: 7678.42
Subtract 168 from 240 to get 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 9:
If we divide 720 by 84, we get 8 and a remainder of 48.
The next digit of our result is 8. 
Result so far: 7678.428
Deduct 672 from 720 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 10:
84 can be fit into 480 5 times, resulting in a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 7678.4285
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.

Step 11:
600 divided by 84 is 7 with a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 7678.42857
Subtracting 588 from 600 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.

Step 12:
The number 84 fits into 120 1 times, leaving a remainder of 36.
Write down 1 as next digit of the result. 
Result so far: 7678.428571
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.

Step 13:
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: 7678.4285714
The remainder is 24 after subtracting 336 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 14:
84 can be fit into 240 2 times, resulting in a remainder of 72.
Write down 2 as next digit of the result. 
Result so far: 7678.42857142
Subtract 168 from 240 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Our division results in 7678.42857142 with a remaining 7.2e-08.