We look at the division of 621588 by 84 
Let's see how many times 84 fits into 621588.

Advancing to step 1:
84 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 84

Advancing to step 2:
The number 84 fits into 62 0 times, leaving a remainder of 62.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 62, we get 62.
Include the next digit (1) from the dividend after 62, then repeat: 621 / 84

Going ahead to step 3:
621 divided by 84 is 7 with a remainder of 33.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 588 from 621 leaves us with 33.
Grab the next digit (5) from the dividend, add it to 33, then carry on: 335 / 84

Going ahead to step 4:
The number 84 fits into 335 3 times, leaving a remainder of 83.
Put 3 as the next digit of the answer. 
Result so far: 73.0
Subtract 252 from 335 to get 83.
Fetch the next digit (8) from the dividend, attach it to 83 and continue: 838 / 84

Advancing to step 5:
When dividing 838 by 84, we get 9 with a remainder of 82.
Put 9 as the next digit of the answer. 
Result so far: 739.0
Subtract 756 from 838 to get 82.
Grab the next digit (8) from the dividend, add it to 82, then carry on: 828 / 84

Step 6:
The number 84 fits into 828 9 times, leaving a remainder of 72.
The number 9 becomes the next digit in our result. 
Result so far: 7399.0
Subtracting 756 from 828 leaves us 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.

On to step 7:
84 goes into 720 8 times with a remainder of 48.
The next digit of our result is 8. 
Result so far: 7399.8
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 8:
When dividing 480 by 84, we get 5 with a remainder of 60.
The next digit of our result is 5. 
Result so far: 7399.85
Deduct 420 from 480 and we're left 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.

On to step 9:
When dividing 600 by 84, we get 7 with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 7399.857
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.

Going ahead to step 10:
84 can be fit into 120 1 times, resulting in a remainder of 36.
The number 1 becomes the next digit in our result. 
Result so far: 7399.8571
Deduct 84 from 120 and we're left 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.

Step 11:
360 divided by 84 is 4 with a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 7399.85714
Subtracting 336 from 360 leaves us 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 12:
240 divided by 84 is 2 with a remainder of 72.
Use 2 as the next digit of our solution. 
Result so far: 7399.857142
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 13:
When dividing 720 by 84, we get 8 with a remainder of 48.
The next digit of our result is 8. 
Result so far: 7399.8571428
If we take 672 away from 720, we end up 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.

On to step 14:
If we divide 480 by 84, we get 5 and a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 7399.85714285
If we subtract 420 from 480, we 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.

The final result is 7399.85714285 with a remainder of 6e-08.