We divide 28733361 by 400
The aim is to understand the frequency of 400 in 28733361.

Moving on to step 1:
400 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 400

Let's proceed to step 2:
The number 400 fits into 28 0 times, leaving a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Take the next digit (7) from the dividend and append it to 28, then repeat: 287 / 400

Step 3:
400 can be fit into 287 0 times, resulting in a remainder of 287.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 287, we get 287.
Grab the next digit (3) from the dividend, add it to 287, then carry on: 2873 / 400

Moving on to step 4:
400 can be fit into 2873 7 times, resulting in a remainder of 73.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 2800 from 2873, we get 73.
Bring next digit (3) of the dividend behind the 73 and repeat the process: 733 / 400

Going ahead to step 5:
If we divide 733 by 400, we get 1 and a remainder of 333.
Write down 1 as next digit of the result. 
Result so far: 71.0
If we take 400 away from 733, we end up with 333.
Take the next digit (3) from the dividend and append it to 333, then repeat: 3333 / 400

Step 6:
400 goes into 3333 8 times with a remainder of 133.
Write down 8 as next digit of the result. 
Result so far: 718.0
Subtract 3200 from 3333 to get 133.
Append the next digit (6) from the dividend to 133 and continue with: 1336 / 400

On to step 7:
When dividing 1336 by 400, we get 3 with a remainder of 136.
Record the quotient 3 as the next digit in the result. 
Result so far: 7183.0
Subtract 1200 from 1336 to get 136.
Bring next digit (1) of the dividend behind the 136 and repeat the process: 1361 / 400

Going ahead to step 8:
400 goes into 1361 3 times with a remainder of 161.
Use 3 as the next digit of our solution. 
Result so far: 71833.0
Subtracting 1200 from 1361 leaves us with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Advancing to step 9:
400 can be fit into 1610 4 times, resulting in a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 71833.4
If we subtract 1600 from 1610, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
400 goes into 100 0 times with a remainder of 100.
The next digit of our result is 0. 
Result so far: 71833.4
If we subtract 0 from 100, we 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.

Going ahead to step 11:
The number 400 fits into 1000 2 times, leaving a remainder of 200.
Record the quotient 2 as the next digit in the result. 
Result so far: 71833.402
Deduct 800 from 1000 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 12:
The number 400 fits into 2000 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 71833.4025
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.

Let's proceed to step 13:
400 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 71833.4025
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.

Advancing to step 14:
If we divide 0 by 400, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 71833.4025
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.

The final result is 71833.4025 with a remainder of 0.0.