We look at the division of 6469929 by 90 
Let's see how many times 90 fits into 6469929.

Let's proceed to step 1:
6 divided by 90 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 90

Step 2:
If we divide 64 by 90, we get 0 and a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Grab the next digit (6) from the dividend, add it to 64, then carry on: 646 / 90

On to step 3:
90 can be fit into 646 7 times, resulting in a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 630 from 646, we get 16.
Take the next digit (9) from the dividend and append it to 16, then repeat: 169 / 90

Moving on to step 4:
When dividing 169 by 90, we get 1 with a remainder of 79.
Record the quotient 1 as the next digit in the result. 
Result so far: 71.0
Deduct 90 from 169 and we're left with 79.
Include the next digit (9) from the dividend after 79, then repeat: 799 / 90

Advancing to step 5:
799 divided by 90 is 8 with a remainder of 79.
The number 8 becomes the next digit in our result. 
Result so far: 718.0
Subtract 720 from 799 to get 79.
Take the next digit (2) from the dividend and append it to 79, then repeat: 792 / 90

Advancing to step 6:
When dividing 792 by 90, we get 8 with a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 7188.0
If we subtract 720 from 792, we get 72.
Bring next digit (9) of the dividend behind the 72 and repeat the process: 729 / 90

Step 7:
When dividing 729 by 90, we get 8 with a remainder of 9.
The number 8 becomes the next digit in our result. 
Result so far: 71888.0
If we subtract 720 from 729, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 8:
When dividing 90 by 90, we get 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 71888.1
If we subtract 90 from 90, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
90 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 71888.1
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
90 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 71888.1
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 71888.1 with a remaining 0.0.