We look at the division of 75423225 by 523 
Let's see how many times 523 fits into 75423225.

Let's proceed to step 1:
523 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 523

On to step 2:
When dividing 75 by 523, we get 0 with a remainder of 75.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 75, we get 75.
Append the next digit (4) from the dividend to 75 and continue with: 754 / 523

On to step 3:
The number 523 fits into 754 1 times, leaving a remainder of 231.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 523 from 754 leaves us with 231.
Fetch the next digit (2) from the dividend, attach it to 231 and continue: 2312 / 523

Let's proceed to step 4:
523 can be fit into 2312 4 times, resulting in a remainder of 220.
The next digit of our result is 4. 
Result so far: 14.0
Subtracting 2092 from 2312 leaves us with 220.
Fetch the next digit (3) from the dividend, attach it to 220 and continue: 2203 / 523

Let's proceed to step 5:
If we divide 2203 by 523, we get 4 and a remainder of 111.
Put 4 as the next digit of the answer. 
Result so far: 144.0
Subtract 2092 from 2203 to get 111.
Take the next digit (2) from the dividend and append it to 111, then repeat: 1112 / 523

Let's proceed to step 6:
523 goes into 1112 2 times with a remainder of 66.
Record the quotient 2 as the next digit in the result. 
Result so far: 1442.0
If we take 1046 away from 1112, we end up with 66.
Fetch the next digit (2) from the dividend, attach it to 66 and continue: 662 / 523

Going ahead to step 7:
When dividing 662 by 523, we get 1 with a remainder of 139.
Put 1 as the next digit of the answer. 
Result so far: 14421.0
Deduct 523 from 662 and we're left with 139.
Bring next digit (5) of the dividend behind the 139 and repeat the process: 1395 / 523

Step 8:
523 can be fit into 1395 2 times, resulting in a remainder of 349.
The number 2 becomes the next digit in our result. 
Result so far: 144212.0
Subtracting 1046 from 1395 leaves us with 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Going ahead to step 9:
If we divide 3490 by 523, we get 6 and a remainder of 352.
Record the quotient 6 as the next digit in the result. 
Result so far: 144212.6
The remainder is 352 after subtracting 3138 from 3490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

On to step 10:
523 goes into 3520 6 times with a remainder of 382.
Put 6 as the next digit of the answer. 
Result so far: 144212.66
Deduct 3138 from 3520 and we're left with 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

The quotient of the division is 144212.66, and the remainder is 0.382.