We divide 618623 by 90
Let's see how many times 90 fits into 618623.

On to step 1:
When dividing 6 by 90, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 90

Let's proceed to step 2:
The number 90 fits into 61 0 times, leaving a remainder of 61.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 61 to get 61.
Append the next digit (8) from the dividend to 61 and continue with: 618 / 90

On to step 3:
90 goes into 618 6 times with a remainder of 78.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 78 after subtracting 540 from 618.
Append the next digit (6) from the dividend to 78 and continue with: 786 / 90

Advancing to step 4:
90 goes into 786 8 times with a remainder of 66.
The number 8 becomes the next digit in our result. 
Result so far: 68.0
Deduct 720 from 786 and we're left with 66.
Grab the next digit (2) from the dividend, add it to 66, then carry on: 662 / 90

On to step 5:
90 can be fit into 662 7 times, resulting in a remainder of 32.
Record the quotient 7 as the next digit in the result. 
Result so far: 687.0
If we subtract 630 from 662, we get 32.
Fetch the next digit (3) from the dividend, attach it to 32 and continue: 323 / 90

Advancing to step 6:
323 divided by 90 is 3 with a remainder of 53.
Write down 3 as next digit of the result. 
Result so far: 6873.0
Subtract 270 from 323 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 7:
90 goes into 530 5 times with a remainder of 80.
Put 5 as the next digit of the answer. 
Result so far: 6873.5
If we take 450 away from 530, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 8:
800 divided by 90 is 8 with a remainder of 80.
Record the quotient 8 as the next digit in the result. 
Result so far: 6873.58
Deduct 720 from 800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 9:
90 goes into 800 8 times with a remainder of 80.
Write down 8 as next digit of the result. 
Result so far: 6873.588
Subtract 720 from 800 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 6873.588, with a leftover of 0.008.