We're dividing 91887455 by 603 
The aim is to understand the frequency of 603 in 91887455.

Advancing to step 1:
603 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 603

Advancing to step 2:
If we divide 91 by 603, we get 0 and a remainder of 91.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Fetch the next digit (8) from the dividend, attach it to 91 and continue: 918 / 603

Going ahead to step 3:
If we divide 918 by 603, we get 1 and a remainder of 315.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 315 after subtracting 603 from 918.
Bring next digit (8) of the dividend behind the 315 and repeat the process: 3158 / 603

Moving on to step 4:
The number 603 fits into 3158 5 times, leaving a remainder of 143.
Put 5 as the next digit of the answer. 
Result so far: 15.0
The remainder is 143 after subtracting 3015 from 3158.
Include the next digit (7) from the dividend after 143, then repeat: 1437 / 603

Moving on to step 5:
The number 603 fits into 1437 2 times, leaving a remainder of 231.
Put 2 as the next digit of the answer. 
Result so far: 152.0
The remainder is 231 after subtracting 1206 from 1437.
Fetch the next digit (4) from the dividend, attach it to 231 and continue: 2314 / 603

Let's proceed to step 6:
When dividing 2314 by 603, we get 3 with a remainder of 505.
Write down 3 as next digit of the result. 
Result so far: 1523.0
Subtracting 1809 from 2314 leaves us with 505.
Take the next digit (5) from the dividend and append it to 505, then repeat: 5055 / 603

Moving on to step 7:
603 goes into 5055 8 times with a remainder of 231.
The number 8 becomes the next digit in our result. 
Result so far: 15238.0
If we subtract 4824 from 5055, we get 231.
Bring next digit (5) of the dividend behind the 231 and repeat the process: 2315 / 603

Let's proceed to step 8:
603 goes into 2315 3 times with a remainder of 506.
Write down 3 as next digit of the result. 
Result so far: 152383.0
If we take 1809 away from 2315, we end up with 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Advancing to step 9:
If we divide 5060 by 603, we get 8 and a remainder of 236.
Put 8 as the next digit of the answer. 
Result so far: 152383.8
If we subtract 4824 from 5060, we get 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Let's proceed to step 10:
If we divide 2360 by 603, we get 3 and a remainder of 551.
Record the quotient 3 as the next digit in the result. 
Result so far: 152383.83
If we subtract 1809 from 2360, we get 551.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5510, and continue the process.

Step 11:
The number 603 fits into 5510 9 times, leaving a remainder of 83.
Record the quotient 9 as the next digit in the result. 
Result so far: 152383.839
If we subtract 5427 from 5510, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 12:
603 goes into 830 1 times with a remainder of 227.
Record the quotient 1 as the next digit in the result. 
Result so far: 152383.8391
The remainder is 227 after subtracting 603 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Going ahead to step 13:
2270 divided by 603 is 3 with a remainder of 461.
Use 3 as the next digit of our solution. 
Result so far: 152383.83913
Subtract 1809 from 2270 to get 461.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4610, and continue the process.

Step 14:
If we divide 4610 by 603, we get 7 and a remainder of 389.
Use 7 as the next digit of our solution. 
Result so far: 152383.839137
If we take 4221 away from 4610, we end up with 389.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

Going ahead to step 15:
If we divide 3890 by 603, we get 6 and a remainder of 272.
Put 6 as the next digit of the answer. 
Result so far: 152383.8391376
If we take 3618 away from 3890, we end up with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

On to step 16:
2720 divided by 603 is 4 with a remainder of 308.
Put 4 as the next digit of the answer. 
Result so far: 152383.83913764
Subtracting 2412 from 2720 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

After the division, we end up with 152383.83913764 and a remainder of 3.08e-07.