73154903 ÷ 538 
The aim is to understand the frequency of 538 in 73154903.

Advancing to step 1:
538 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 538

Let's proceed to step 2:
The number 538 fits into 73 0 times, leaving a remainder of 73.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 73 after subtracting 0 from 73.
Append the next digit (1) from the dividend to 73 and continue with: 731 / 538

Advancing to step 3:
731 divided by 538 is 1 with a remainder of 193.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 538 from 731 and we're left with 193.
Include the next digit (5) from the dividend after 193, then repeat: 1935 / 538

Advancing to step 4:
1935 divided by 538 is 3 with a remainder of 321.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 1614 from 1935 to get 321.
Grab the next digit (4) from the dividend, add it to 321, then carry on: 3214 / 538

Going ahead to step 5:
If we divide 3214 by 538, we get 5 and a remainder of 524.
Write down 5 as next digit of the result. 
Result so far: 135.0
Subtract 2690 from 3214 to get 524.
Grab the next digit (9) from the dividend, add it to 524, then carry on: 5249 / 538

Advancing to step 6:
The number 538 fits into 5249 9 times, leaving a remainder of 407.
Put 9 as the next digit of the answer. 
Result so far: 1359.0
If we take 4842 away from 5249, we end up with 407.
Append the next digit (0) from the dividend to 407 and continue with: 4070 / 538

Step 7:
When dividing 4070 by 538, we get 7 with a remainder of 304.
The number 7 becomes the next digit in our result. 
Result so far: 13597.0
If we take 3766 away from 4070, we end up with 304.
Include the next digit (3) from the dividend after 304, then repeat: 3043 / 538

Going ahead to step 8:
If we divide 3043 by 538, we get 5 and a remainder of 353.
Record the quotient 5 as the next digit in the result. 
Result so far: 135975.0
If we take 2690 away from 3043, we end up with 353.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

On to step 9:
538 can be fit into 3530 6 times, resulting in a remainder of 302.
The number 6 becomes the next digit in our result. 
Result so far: 135975.6
Subtract 3228 from 3530 to get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Step 10:
538 can be fit into 3020 5 times, resulting in a remainder of 330.
Record the quotient 5 as the next digit in the result. 
Result so far: 135975.65
If we subtract 2690 from 3020, we get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Moving on to step 11:
If we divide 3300 by 538, we get 6 and a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 135975.656
If we subtract 3228 from 3300, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 12:
538 goes into 720 1 times with a remainder of 182.
Record the quotient 1 as the next digit in the result. 
Result so far: 135975.6561
If we subtract 538 from 720, we get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Going ahead to step 13:
When dividing 1820 by 538, we get 3 with a remainder of 206.
The next digit of our result is 3. 
Result so far: 135975.65613
Subtracting 1614 from 1820 leaves us with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Going ahead to step 14:
538 goes into 2060 3 times with a remainder of 446.
Record the quotient 3 as the next digit in the result. 
Result so far: 135975.656133
Subtract 1614 from 2060 to get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

After the division, we end up with 135975.656133 and a remainder of 4.46e-05.