40385401 ÷ 144 
The aim is to understand the frequency of 144 in 40385401.

Going ahead to step 1:
144 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 144

Step 2:
144 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
The remainder is 40 after subtracting 0 from 40.
Grab the next digit (3) from the dividend, add it to 40, then carry on: 403 / 144

Advancing to step 3:
If we divide 403 by 144, we get 2 and a remainder of 115.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 288 from 403, we get 115.
Append the next digit (8) from the dividend to 115 and continue with: 1158 / 144

Going ahead to step 4:
144 can be fit into 1158 8 times, resulting in a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 28.0
If we take 1152 away from 1158, we end up with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 144

Advancing to step 5:
144 goes into 65 0 times with a remainder of 65.
The number 0 becomes the next digit in our result. 
Result so far: 280.0
Deduct 0 from 65 and we're left with 65.
Bring next digit (4) of the dividend behind the 65 and repeat the process: 654 / 144

Step 6:
If we divide 654 by 144, we get 4 and a remainder of 78.
Use 4 as the next digit of our solution. 
Result so far: 2804.0
Subtracting 576 from 654 leaves us with 78.
Grab the next digit (0) from the dividend, add it to 78, then carry on: 780 / 144

Let's proceed to step 7:
If we divide 780 by 144, we get 5 and a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 28045.0
Subtracting 720 from 780 leaves us with 60.
Bring next digit (1) of the dividend behind the 60 and repeat the process: 601 / 144

Going ahead to step 8:
If we divide 601 by 144, we get 4 and a remainder of 25.
The next digit of our result is 4. 
Result so far: 280454.0
The remainder is 25 after subtracting 576 from 601.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 9:
250 divided by 144 is 1 with a remainder of 106.
Record the quotient 1 as the next digit in the result. 
Result so far: 280454.1
The remainder is 106 after subtracting 144 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Advancing to step 10:
144 goes into 1060 7 times with a remainder of 52.
Use 7 as the next digit of our solution. 
Result so far: 280454.17
If we subtract 1008 from 1060, 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.

Advancing to step 11:
If we divide 520 by 144, we get 3 and a remainder of 88.
Record the quotient 3 as the next digit in the result. 
Result so far: 280454.173
If we subtract 432 from 520, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 12:
880 divided by 144 is 6 with a remainder of 16.
The next digit of our result is 6. 
Result so far: 280454.1736
If we take 864 away from 880, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 13:
144 goes into 160 1 times with a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 280454.17361
Deduct 144 from 160 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 14:
When dividing 160 by 144, we get 1 with a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 280454.173611
Deduct 144 from 160 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 280454.173611, with a leftover of 1.6e-06.