91315388 divided by 490 
The aim is to understand the frequency of 490 in 91315388.

Going ahead to step 1:
When dividing 9 by 490, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 490

Moving on to step 2:
91 divided by 490 is 0 with a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Take the next digit (3) from the dividend and append it to 91, then repeat: 913 / 490

Moving on to step 3:
490 can be fit into 913 1 times, resulting in a remainder of 423.
The next digit of our result is 1. 
Result so far: 1.0
If we take 490 away from 913, we end up with 423.
Fetch the next digit (1) from the dividend, attach it to 423 and continue: 4231 / 490

Step 4:
When dividing 4231 by 490, we get 8 with a remainder of 311.
Put 8 as the next digit of the answer. 
Result so far: 18.0
If we subtract 3920 from 4231, we get 311.
Fetch the next digit (5) from the dividend, attach it to 311 and continue: 3115 / 490

Going ahead to step 5:
If we divide 3115 by 490, we get 6 and a remainder of 175.
The next digit of our result is 6. 
Result so far: 186.0
Deduct 2940 from 3115 and we're left with 175.
Append the next digit (3) from the dividend to 175 and continue with: 1753 / 490

Let's proceed to step 6:
490 can be fit into 1753 3 times, resulting in a remainder of 283.
The number 3 becomes the next digit in our result. 
Result so far: 1863.0
If we take 1470 away from 1753, we end up with 283.
Grab the next digit (8) from the dividend, add it to 283, then carry on: 2838 / 490

On to step 7:
If we divide 2838 by 490, we get 5 and a remainder of 388.
The number 5 becomes the next digit in our result. 
Result so far: 18635.0
If we take 2450 away from 2838, we end up with 388.
Fetch the next digit (8) from the dividend, attach it to 388 and continue: 3888 / 490

Step 8:
490 goes into 3888 7 times with a remainder of 458.
Use 7 as the next digit of our solution. 
Result so far: 186357.0
The remainder is 458 after subtracting 3430 from 3888.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Advancing to step 9:
490 goes into 4580 9 times with a remainder of 170.
Put 9 as the next digit of the answer. 
Result so far: 186357.9
If we subtract 4410 from 4580, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 10:
490 can be fit into 1700 3 times, resulting in a remainder of 230.
Write down 3 as next digit of the result. 
Result so far: 186357.93
The remainder is 230 after subtracting 1470 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Advancing to step 11:
490 can be fit into 2300 4 times, resulting in a remainder of 340.
Record the quotient 4 as the next digit in the result. 
Result so far: 186357.934
If we take 1960 away from 2300, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Step 12:
If we divide 3400 by 490, we get 6 and a remainder of 460.
Record the quotient 6 as the next digit in the result. 
Result so far: 186357.9346
Subtract 2940 from 3400 to get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Going ahead to step 13:
490 can be fit into 4600 9 times, resulting in a remainder of 190.
The number 9 becomes the next digit in our result. 
Result so far: 186357.93469
Subtracting 4410 from 4600 leaves us with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 14:
If we divide 1900 by 490, we get 3 and a remainder of 430.
The number 3 becomes the next digit in our result. 
Result so far: 186357.934693
If we take 1470 away from 1900, we end up with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Advancing to step 15:
When dividing 4300 by 490, we get 8 with a remainder of 380.
Use 8 as the next digit of our solution. 
Result so far: 186357.9346938
Subtracting 3920 from 4300 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 16:
490 goes into 3800 7 times with a remainder of 370.
The number 7 becomes the next digit in our result. 
Result so far: 186357.93469387
Subtract 3430 from 3800 to get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

In conclusion, the division gives 186357.93469387 with a balance of 3.7e-07.