Let's divide 420603 by 45
The aim is to understand the frequency of 45 in 420603.

Moving on to step 1:
45 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 45

On to step 2:
The number 45 fits into 42 0 times, leaving a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Include the next digit (0) from the dividend after 42, then repeat: 420 / 45

Step 3:
45 goes into 420 9 times with a remainder of 15.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtracting 405 from 420 leaves us with 15.
Include the next digit (6) from the dividend after 15, then repeat: 156 / 45

On to step 4:
45 goes into 156 3 times with a remainder of 21.
The number 3 becomes the next digit in our result. 
Result so far: 93.0
Deduct 135 from 156 and we're left with 21.
Bring next digit (0) of the dividend behind the 21 and repeat the process: 210 / 45

On to step 5:
45 goes into 210 4 times with a remainder of 30.
Record the quotient 4 as the next digit in the result. 
Result so far: 934.0
The remainder is 30 after subtracting 180 from 210.
Grab the next digit (3) from the dividend, add it to 30, then carry on: 303 / 45

On to step 6:
45 can be fit into 303 6 times, resulting in a remainder of 33.
Record the quotient 6 as the next digit in the result. 
Result so far: 9346.0
The remainder is 33 after subtracting 270 from 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 7:
330 divided by 45 is 7 with a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 9346.7
If we take 315 away from 330, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 8:
45 goes into 150 3 times with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 9346.73
Subtracting 135 from 150 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 9:
45 goes into 150 3 times with a remainder of 15.
The next digit of our result is 3. 
Result so far: 9346.733
Deduct 135 from 150 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The quotient of the division is 9346.733, and the remainder is 0.0015.