We're dividing 620402 by 90 
We're looking to find how many times 90 goes into 620402.

Step 1:
The number 90 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 90

On to step 2:
When dividing 62 by 90, we get 0 with a remainder of 62.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 62 leaves us with 62.
Grab the next digit (0) from the dividend, add it to 62, then carry on: 620 / 90

Going ahead to step 3:
The number 90 fits into 620 6 times, leaving a remainder of 80.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 540 from 620 to get 80.
Fetch the next digit (4) from the dividend, attach it to 80 and continue: 804 / 90

Step 4:
The number 90 fits into 804 8 times, leaving a remainder of 84.
Use 8 as the next digit of our solution. 
Result so far: 68.0
If we take 720 away from 804, we end up with 84.
Include the next digit (0) from the dividend after 84, then repeat: 840 / 90

On to step 5:
When dividing 840 by 90, we get 9 with a remainder of 30.
The number 9 becomes the next digit in our result. 
Result so far: 689.0
If we take 810 away from 840, we end up with 30.
Bring next digit (2) of the dividend behind the 30 and repeat the process: 302 / 90

Step 6:
90 goes into 302 3 times with a remainder of 32.
The next digit of our result is 3. 
Result so far: 6893.0
Subtracting 270 from 302 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 7:
The number 90 fits into 320 3 times, leaving a remainder of 50.
Record the quotient 3 as the next digit in the result. 
Result so far: 6893.3
Subtracting 270 from 320 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 8:
90 can be fit into 500 5 times, resulting in a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 6893.35
If we take 450 away from 500, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 9:
The number 90 fits into 500 5 times, leaving a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 6893.355
If we take 450 away from 500, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The quotient of the division is 6893.355, and the remainder is 0.005.