We're dividing 423390 by 53 
Let's see how many times 53 fits into 423390.

Advancing to step 1:
53 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 53

Let's proceed to step 2:
When dividing 42 by 53, we get 0 with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Take the next digit (3) from the dividend and append it to 42, then repeat: 423 / 53

Let's proceed to step 3:
The number 53 fits into 423 7 times, leaving a remainder of 52.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 371 from 423, we get 52.
Grab the next digit (3) from the dividend, add it to 52, then carry on: 523 / 53

Going ahead to step 4:
If we divide 523 by 53, we get 9 and a remainder of 46.
Put 9 as the next digit of the answer. 
Result so far: 79.0
If we subtract 477 from 523, we get 46.
Include the next digit (9) from the dividend after 46, then repeat: 469 / 53

Let's proceed to step 5:
469 divided by 53 is 8 with a remainder of 45.
Record the quotient 8 as the next digit in the result. 
Result so far: 798.0
Subtracting 424 from 469 leaves us with 45.
Append the next digit (0) from the dividend to 45 and continue with: 450 / 53

Advancing to step 6:
If we divide 450 by 53, we get 8 and a remainder of 26.
The next digit of our result is 8. 
Result so far: 7988.0
Subtract 424 from 450 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 7:
53 goes into 260 4 times with a remainder of 48.
The next digit of our result is 4. 
Result so far: 7988.4
The remainder is 48 after subtracting 212 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 8:
53 goes into 480 9 times with a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 7988.49
The remainder is 3 after subtracting 477 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
30 divided by 53 is 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 7988.49
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 10:
When dividing 300 by 53, we get 5 with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 7988.4905
Deduct 265 from 300 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 11:
If we divide 350 by 53, we get 6 and a remainder of 32.
The next digit of our result is 6. 
Result so far: 7988.49056
The remainder is 32 after subtracting 318 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 12:
53 can be fit into 320 6 times, resulting in a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 7988.490566
Deduct 318 from 320 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 7988.490566 with a remainder of 2e-07.