400391 ÷ 53 
The aim is to understand the frequency of 53 in 400391.

On to step 1:
The number 53 fits into 4 0 times, leaving a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 53

Advancing to step 2:
53 goes into 40 0 times with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 40 to get 40.
Append the next digit (0) from the dividend to 40 and continue with: 400 / 53

Let's proceed to step 3:
When dividing 400 by 53, we get 7 with a remainder of 29.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Deduct 371 from 400 and we're left with 29.
Take the next digit (3) from the dividend and append it to 29, then repeat: 293 / 53

Advancing to step 4:
The number 53 fits into 293 5 times, leaving a remainder of 28.
The number 5 becomes the next digit in our result. 
Result so far: 75.0
The remainder is 28 after subtracting 265 from 293.
Include the next digit (9) from the dividend after 28, then repeat: 289 / 53

Going ahead to step 5:
The number 53 fits into 289 5 times, leaving a remainder of 24.
Put 5 as the next digit of the answer. 
Result so far: 755.0
Deduct 265 from 289 and we're left with 24.
Bring next digit (1) of the dividend behind the 24 and repeat the process: 241 / 53

Advancing to step 6:
53 goes into 241 4 times with a remainder of 29.
The next digit of our result is 4. 
Result so far: 7554.0
Deduct 212 from 241 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
290 divided by 53 is 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 7554.5
Deduct 265 from 290 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 8:
53 goes into 250 4 times with a remainder of 38.
Put 4 as the next digit of the answer. 
Result so far: 7554.54
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.

Advancing to step 9:
The number 53 fits into 380 7 times, leaving a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 7554.547
Deduct 371 from 380 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 10:
53 goes into 90 1 times with a remainder of 37.
The number 1 becomes the next digit in our result. 
Result so far: 7554.5471
Subtract 53 from 90 to 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:
53 goes into 370 6 times with a remainder of 52.
The next digit of our result is 6. 
Result so far: 7554.54716
If we subtract 318 from 370, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 12:
520 divided by 53 is 9 with a remainder of 43.
Write down 9 as next digit of the result. 
Result so far: 7554.547169
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.

Moving on to step 13:
430 divided by 53 is 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 7554.5471698
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.

Advancing to step 14:
53 can be fit into 60 1 times, resulting in a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 7554.54716981
Subtracting 53 from 60 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The quotient of the division is 7554.54716981, and the remainder is 7e-09.