Let's divide 673820 by 90
We want to figure out the number of times 673820 can be divided by 90.

Step 1:
6 divided by 90 is 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.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 90

Moving on to step 2:
If we divide 67 by 90, we get 0 and a remainder of 67.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 67 and we're left with 67.
Take the next digit (3) from the dividend and append it to 67, then repeat: 673 / 90

Let's proceed to step 3:
The number 90 fits into 673 7 times, leaving a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we take 630 away from 673, we end up with 43.
Grab the next digit (8) from the dividend, add it to 43, then carry on: 438 / 90

Advancing to step 4:
438 divided by 90 is 4 with a remainder of 78.
Record the quotient 4 as the next digit in the result. 
Result so far: 74.0
The remainder is 78 after subtracting 360 from 438.
Append the next digit (2) from the dividend to 78 and continue with: 782 / 90

Going ahead to step 5:
If we divide 782 by 90, we get 8 and a remainder of 62.
The number 8 becomes the next digit in our result. 
Result so far: 748.0
Subtract 720 from 782 to get 62.
Fetch the next digit (0) from the dividend, attach it to 62 and continue: 620 / 90

Advancing to step 6:
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: 7486.0
If we take 540 away from 620, 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.

Let's proceed to step 7:
800 divided by 90 is 8 with a remainder of 80.
Write down 8 as next digit of the result. 
Result so far: 7486.8
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.

Step 8:
90 can be fit into 800 8 times, resulting in a remainder of 80.
The next digit of our result is 8. 
Result so far: 7486.88
Subtracting 720 from 800 leaves us 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.

The quotient of the division is 7486.88, and the remainder is 0.08.