We look at the division of 53598437 by 400 
The aim is to understand the frequency of 400 in 53598437.

Advancing to step 1:
If we divide 5 by 400, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 400

Going ahead to step 2:
The number 400 fits into 53 0 times, leaving a remainder of 53.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 53, we end up with 53.
Grab the next digit (5) from the dividend, add it to 53, then carry on: 535 / 400

Step 3:
If we divide 535 by 400, we get 1 and a remainder of 135.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 400 from 535, we get 135.
Bring next digit (9) of the dividend behind the 135 and repeat the process: 1359 / 400

Advancing to step 4:
If we divide 1359 by 400, we get 3 and a remainder of 159.
The next digit of our result is 3. 
Result so far: 13.0
Subtracting 1200 from 1359 leaves us with 159.
Bring next digit (8) of the dividend behind the 159 and repeat the process: 1598 / 400

Let's proceed to step 5:
When dividing 1598 by 400, we get 3 with a remainder of 398.
Put 3 as the next digit of the answer. 
Result so far: 133.0
If we take 1200 away from 1598, we end up with 398.
Take the next digit (4) from the dividend and append it to 398, then repeat: 3984 / 400

Let's proceed to step 6:
3984 divided by 400 is 9 with a remainder of 384.
The next digit of our result is 9. 
Result so far: 1339.0
The remainder is 384 after subtracting 3600 from 3984.
Include the next digit (3) from the dividend after 384, then repeat: 3843 / 400

Let's proceed to step 7:
400 goes into 3843 9 times with a remainder of 243.
Record the quotient 9 as the next digit in the result. 
Result so far: 13399.0
Subtracting 3600 from 3843 leaves us with 243.
Include the next digit (7) from the dividend after 243, then repeat: 2437 / 400

Going ahead to step 8:
2437 divided by 400 is 6 with a remainder of 37.
Write down 6 as next digit of the result. 
Result so far: 133996.0
If we take 2400 away from 2437, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 9:
400 can be fit into 370 0 times, resulting in a remainder of 370.
Record the quotient 0 as the next digit in the result. 
Result so far: 133996.0
If we subtract 0 from 370, we get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Step 10:
400 goes into 3700 9 times with a remainder of 100.
Write down 9 as next digit of the result. 
Result so far: 133996.09
Subtract 3600 from 3700 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 11:
400 goes into 1000 2 times with a remainder of 200.
Write down 2 as next digit of the result. 
Result so far: 133996.092
If we subtract 800 from 1000, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 12:
When dividing 2000 by 400, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 133996.0925
Subtract 2000 from 2000 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 13:
0 divided by 400 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 133996.0925
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 14:
0 divided by 400 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 133996.0925
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 133996.0925 with a balance of 0.0.