We divide 45461234 by 645
The aim is to understand the frequency of 645 in 45461234.

Moving on to step 1:
4 divided by 645 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 645

Advancing to step 2:
645 goes into 45 0 times with a remainder of 45.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Append the next digit (4) from the dividend to 45 and continue with: 454 / 645

Step 3:
454 divided by 645 is 0 with a remainder of 454.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 454 to get 454.
Append the next digit (6) from the dividend to 454 and continue with: 4546 / 645

On to step 4:
645 can be fit into 4546 7 times, resulting in a remainder of 31.
The next digit of our result is 7. 
Result so far: 7.0
Subtracting 4515 from 4546 leaves us with 31.
Include the next digit (1) from the dividend after 31, then repeat: 311 / 645

Step 5:
The number 645 fits into 311 0 times, leaving a remainder of 311.
Record the quotient 0 as the next digit in the result. 
Result so far: 70.0
Subtract 0 from 311 to get 311.
Include the next digit (2) from the dividend after 311, then repeat: 3112 / 645

On to step 6:
645 can be fit into 3112 4 times, resulting in a remainder of 532.
Put 4 as the next digit of the answer. 
Result so far: 704.0
Subtract 2580 from 3112 to get 532.
Grab the next digit (3) from the dividend, add it to 532, then carry on: 5323 / 645

Step 7:
645 can be fit into 5323 8 times, resulting in a remainder of 163.
Put 8 as the next digit of the answer. 
Result so far: 7048.0
If we subtract 5160 from 5323, we get 163.
Include the next digit (4) from the dividend after 163, then repeat: 1634 / 645

On to step 8:
645 goes into 1634 2 times with a remainder of 344.
Record the quotient 2 as the next digit in the result. 
Result so far: 70482.0
Subtracting 1290 from 1634 leaves us with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Going ahead to step 9:
645 goes into 3440 5 times with a remainder of 215.
Write down 5 as next digit of the result. 
Result so far: 70482.5
The remainder is 215 after subtracting 3225 from 3440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Going ahead to step 10:
645 goes into 2150 3 times with a remainder of 215.
Use 3 as the next digit of our solution. 
Result so far: 70482.53
Subtracting 1935 from 2150 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Advancing to step 11:
645 can be fit into 2150 3 times, resulting in a remainder of 215.
The number 3 becomes the next digit in our result. 
Result so far: 70482.533
Deduct 1935 from 2150 and we're left with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

After the division, we end up with 70482.533 and a remainder of 0.0215.