We look at the division of 3504099 by 523 
We want to figure out the number of times 3504099 can be divided by 523.

Moving on to step 1:
523 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 523

Let's proceed to step 2:
523 goes into 35 0 times with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 523

Moving on to step 3:
350 divided by 523 is 0 with a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 350, we get 350.
Take the next digit (4) from the dividend and append it to 350, then repeat: 3504 / 523

Going ahead to step 4:
If we divide 3504 by 523, we get 6 and a remainder of 366.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 3138 from 3504 leaves us with 366.
Fetch the next digit (0) from the dividend, attach it to 366 and continue: 3660 / 523

On to step 5:
The number 523 fits into 3660 6 times, leaving a remainder of 522.
Put 6 as the next digit of the answer. 
Result so far: 66.0
Subtracting 3138 from 3660 leaves us with 522.
Bring next digit (9) of the dividend behind the 522 and repeat the process: 5229 / 523

Let's proceed to step 6:
When dividing 5229 by 523, we get 9 with a remainder of 522.
Put 9 as the next digit of the answer. 
Result so far: 669.0
Deduct 4707 from 5229 and we're left with 522.
Take the next digit (9) from the dividend and append it to 522, then repeat: 5229 / 523

Going ahead to step 7:
When dividing 5229 by 523, we get 9 with a remainder of 522.
Record the quotient 9 as the next digit in the result. 
Result so far: 6699.0
Subtract 4707 from 5229 to get 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

On to step 8:
The number 523 fits into 5220 9 times, leaving a remainder of 513.
Put 9 as the next digit of the answer. 
Result so far: 6699.9
The remainder is 513 after subtracting 4707 from 5220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

Advancing to step 9:
523 goes into 5130 9 times with a remainder of 423.
Write down 9 as next digit of the result. 
Result so far: 6699.99
Deduct 4707 from 5130 and we're left with 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

After the division, we end up with 6699.99 and a remainder of 0.423.