16736121 divided by 253 
The aim is to understand the frequency of 253 in 16736121.

Going ahead to step 1:
253 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 253

Advancing to step 2:
The number 253 fits into 16 0 times, leaving a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Take the next digit (7) from the dividend and append it to 16, then repeat: 167 / 253

Moving on to step 3:
253 can be fit into 167 0 times, resulting in a remainder of 167.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 167 leaves us with 167.
Include the next digit (3) from the dividend after 167, then repeat: 1673 / 253

Moving on to step 4:
When dividing 1673 by 253, we get 6 with a remainder of 155.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 1518 from 1673 leaves us with 155.
Bring next digit (6) of the dividend behind the 155 and repeat the process: 1556 / 253

Let's proceed to step 5:
If we divide 1556 by 253, we get 6 and a remainder of 38.
The next digit of our result is 6. 
Result so far: 66.0
If we take 1518 away from 1556, we end up with 38.
Include the next digit (1) from the dividend after 38, then repeat: 381 / 253

Going ahead to step 6:
When dividing 381 by 253, we get 1 with a remainder of 128.
Use 1 as the next digit of our solution. 
Result so far: 661.0
Subtract 253 from 381 to get 128.
Include the next digit (2) from the dividend after 128, then repeat: 1282 / 253

Advancing to step 7:
If we divide 1282 by 253, we get 5 and a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 6615.0
If we take 1265 away from 1282, we end up with 17.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 253

Advancing to step 8:
If we divide 171 by 253, we get 0 and a remainder of 171.
Use 0 as the next digit of our solution. 
Result so far: 66150.0
Deduct 0 from 171 and we're left with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Step 9:
The number 253 fits into 1710 6 times, leaving a remainder of 192.
Write down 6 as next digit of the result. 
Result so far: 66150.6
The remainder is 192 after subtracting 1518 from 1710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 10:
When dividing 1920 by 253, we get 7 with a remainder of 149.
Record the quotient 7 as the next digit in the result. 
Result so far: 66150.67
Subtract 1771 from 1920 to get 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Moving on to step 11:
1490 divided by 253 is 5 with a remainder of 225.
Write down 5 as next digit of the result. 
Result so far: 66150.675
The remainder is 225 after subtracting 1265 from 1490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Moving on to step 12:
253 can be fit into 2250 8 times, resulting in a remainder of 226.
Write down 8 as next digit of the result. 
Result so far: 66150.6758
If we take 2024 away from 2250, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Let's proceed to step 13:
If we divide 2260 by 253, we get 8 and a remainder of 236.
Use 8 as the next digit of our solution. 
Result so far: 66150.67588
If we take 2024 away from 2260, we end up with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

The final result is 66150.67588 with a remainder of 0.000236.