399278 divided by 53 
Let's see how many times 53 fits into 399278.

On to step 1:
53 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 53

On to step 2:
The number 53 fits into 39 0 times, leaving a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 53

Step 3:
When dividing 399 by 53, we get 7 with a remainder of 28.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 371 from 399 to get 28.
Bring next digit (2) of the dividend behind the 28 and repeat the process: 282 / 53

Let's proceed to step 4:
When dividing 282 by 53, we get 5 with a remainder of 17.
The next digit of our result is 5. 
Result so far: 75.0
Subtracting 265 from 282 leaves us with 17.
Bring next digit (7) of the dividend behind the 17 and repeat the process: 177 / 53

Moving on to step 5:
If we divide 177 by 53, we get 3 and a remainder of 18.
Record the quotient 3 as the next digit in the result. 
Result so far: 753.0
Subtract 159 from 177 to get 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 53

Moving on to step 6:
If we divide 188 by 53, we get 3 and a remainder of 29.
Use 3 as the next digit of our solution. 
Result so far: 7533.0
If we subtract 159 from 188, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 7:
The number 53 fits into 290 5 times, leaving a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 7533.5
Subtract 265 from 290 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 8:
250 divided by 53 is 4 with a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 7533.54
Deduct 212 from 250 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 9:
380 divided by 53 is 7 with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 7533.547
Subtract 371 from 380 to 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.

Moving on to step 10:
If we divide 90 by 53, we get 1 and a remainder of 37.
The number 1 becomes the next digit in our result. 
Result so far: 7533.5471
If we subtract 53 from 90, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 11:
If we divide 370 by 53, we get 6 and a remainder of 52.
Record the quotient 6 as the next digit in the result. 
Result so far: 7533.54716
Subtracting 318 from 370 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 12:
520 divided by 53 is 9 with a remainder of 43.
The number 9 becomes the next digit in our result. 
Result so far: 7533.547169
Subtract 477 from 520 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 13:
The number 53 fits into 430 8 times, leaving a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 7533.5471698
If we take 424 away from 430, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 14:
If we divide 60 by 53, we get 1 and a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 7533.54716981
Subtract 53 from 60 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 7533.54716981 with a remaining 7e-09.