We're dividing 91909171 by 650 
The aim is to understand the frequency of 650 in 91909171.

Advancing to step 1:
If we divide 9 by 650, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 650

Moving on to step 2:
91 divided by 650 is 0 with a remainder of 91.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 91 and we're left with 91.
Fetch the next digit (9) from the dividend, attach it to 91 and continue: 919 / 650

On to step 3:
The number 650 fits into 919 1 times, leaving a remainder of 269.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 650 from 919 and we're left with 269.
Fetch the next digit (0) from the dividend, attach it to 269 and continue: 2690 / 650

On to step 4:
650 goes into 2690 4 times with a remainder of 90.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Subtracting 2600 from 2690 leaves us with 90.
Append the next digit (9) from the dividend to 90 and continue with: 909 / 650

Step 5:
650 can be fit into 909 1 times, resulting in a remainder of 259.
Put 1 as the next digit of the answer. 
Result so far: 141.0
Deduct 650 from 909 and we're left with 259.
Take the next digit (1) from the dividend and append it to 259, then repeat: 2591 / 650

On to step 6:
When dividing 2591 by 650, we get 3 with a remainder of 641.
Use 3 as the next digit of our solution. 
Result so far: 1413.0
If we subtract 1950 from 2591, we get 641.
Take the next digit (7) from the dividend and append it to 641, then repeat: 6417 / 650

Let's proceed to step 7:
If we divide 6417 by 650, we get 9 and a remainder of 567.
Write down 9 as next digit of the result. 
Result so far: 14139.0
Subtracting 5850 from 6417 leaves us with 567.
Bring next digit (1) of the dividend behind the 567 and repeat the process: 5671 / 650

On to step 8:
When dividing 5671 by 650, we get 8 with a remainder of 471.
The number 8 becomes the next digit in our result. 
Result so far: 141398.0
Subtract 5200 from 5671 to get 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Step 9:
When dividing 4710 by 650, we get 7 with a remainder of 160.
Write down 7 as next digit of the result. 
Result so far: 141398.7
Subtract 4550 from 4710 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 10:
1600 divided by 650 is 2 with a remainder of 300.
Record the quotient 2 as the next digit in the result. 
Result so far: 141398.72
Subtracting 1300 from 1600 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 11:
If we divide 3000 by 650, we get 4 and a remainder of 400.
Write down 4 as next digit of the result. 
Result so far: 141398.724
The remainder is 400 after subtracting 2600 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 12:
If we divide 4000 by 650, we get 6 and a remainder of 100.
The next digit of our result is 6. 
Result so far: 141398.7246
Subtracting 3900 from 4000 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 13:
The number 650 fits into 1000 1 times, leaving a remainder of 350.
Use 1 as the next digit of our solution. 
Result so far: 141398.72461
Deduct 650 from 1000 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

On to step 14:
If we divide 3500 by 650, we get 5 and a remainder of 250.
Write down 5 as next digit of the result. 
Result so far: 141398.724615
Deduct 3250 from 3500 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Let's proceed to step 15:
650 goes into 2500 3 times with a remainder of 550.
Use 3 as the next digit of our solution. 
Result so far: 141398.7246153
Subtract 1950 from 2500 to get 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Moving on to step 16:
650 goes into 5500 8 times with a remainder of 300.
Record the quotient 8 as the next digit in the result. 
Result so far: 141398.72461538
If we subtract 5200 from 5500, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

After the division, we end up with 141398.72461538 and a remainder of 3e-07.