90450269 ÷ 67 
The aim is to understand the frequency of 67 in 90450269.

Step 1:
When dividing 9 by 67, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 67

Step 2:
The number 67 fits into 90 1 times, leaving a remainder of 23.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 67 from 90, we get 23.
Include the next digit (4) from the dividend after 23, then repeat: 234 / 67

Let's proceed to step 3:
The number 67 fits into 234 3 times, leaving a remainder of 33.
Write down 3 as next digit of the result. 
Result so far: 13.0
Deduct 201 from 234 and we're left with 33.
Take the next digit (5) from the dividend and append it to 33, then repeat: 335 / 67

On to step 4:
335 divided by 67 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 135.0
Subtracting 335 from 335 leaves us with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 67

On to step 5:
0 divided by 67 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1350.0
The remainder is 0 after subtracting 0 from 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 67

Advancing to step 6:
The number 67 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 13500.0
Subtract 0 from 2 to get 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 67

Moving on to step 7:
67 can be fit into 26 0 times, resulting in a remainder of 26.
Use 0 as the next digit of our solution. 
Result so far: 135000.0
The remainder is 26 after subtracting 0 from 26.
Take the next digit (9) from the dividend and append it to 26, then repeat: 269 / 67

Let's proceed to step 8:
269 divided by 67 is 4 with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 1350004.0
If we take 268 away from 269, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 9:
The number 67 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 1350004.0
Subtract 0 from 10 to 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.

On to step 10:
The number 67 fits into 100 1 times, leaving a remainder of 33.
The next digit of our result is 1. 
Result so far: 1350004.01
Deduct 67 from 100 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 11:
67 can be fit into 330 4 times, resulting in a remainder of 62.
Put 4 as the next digit of the answer. 
Result so far: 1350004.014
Subtracting 268 from 330 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 12:
When dividing 620 by 67, we get 9 with a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 1350004.0149
Subtract 603 from 620 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 13:
67 goes into 170 2 times with a remainder of 36.
Write down 2 as next digit of the result. 
Result so far: 1350004.01492
The remainder is 36 after subtracting 134 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 14:
The number 67 fits into 360 5 times, leaving a remainder of 25.
The next digit of our result is 5. 
Result so far: 1350004.014925
The remainder is 25 after subtracting 335 from 360.
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 15:
250 divided by 67 is 3 with a remainder of 49.
The number 3 becomes the next digit in our result. 
Result so far: 1350004.0149253
The remainder is 49 after subtracting 201 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 16:
67 goes into 490 7 times with a remainder of 21.
Put 7 as the next digit of the answer. 
Result so far: 1350004.01492537
Subtract 469 from 490 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final result is 1350004.01492537 with a remainder of 2.1e-08.