9190981 ÷ 426 
The aim is to understand the frequency of 426 in 9190981.

Let's proceed to step 1:
9 divided by 426 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 426

Step 2:
The number 426 fits into 91 0 times, leaving a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 91, we end up with 91.
Bring next digit (9) of the dividend behind the 91 and repeat the process: 919 / 426

Step 3:
If we divide 919 by 426, we get 2 and a remainder of 67.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 852 from 919 leaves us with 67.
Grab the next digit (0) from the dividend, add it to 67, then carry on: 670 / 426

Let's proceed to step 4:
426 can be fit into 670 1 times, resulting in a remainder of 244.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we take 426 away from 670, we end up with 244.
Fetch the next digit (9) from the dividend, attach it to 244 and continue: 2449 / 426

On to step 5:
2449 divided by 426 is 5 with a remainder of 319.
Write down 5 as next digit of the result. 
Result so far: 215.0
The remainder is 319 after subtracting 2130 from 2449.
Fetch the next digit (8) from the dividend, attach it to 319 and continue: 3198 / 426

On to step 6:
3198 divided by 426 is 7 with a remainder of 216.
Write down 7 as next digit of the result. 
Result so far: 2157.0
Deduct 2982 from 3198 and we're left with 216.
Grab the next digit (1) from the dividend, add it to 216, then carry on: 2161 / 426

On to step 7:
426 goes into 2161 5 times with a remainder of 31.
Record the quotient 5 as the next digit in the result. 
Result so far: 21575.0
If we take 2130 away from 2161, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 8:
The number 426 fits into 310 0 times, leaving a remainder of 310.
Use 0 as the next digit of our solution. 
Result so far: 21575.0
Subtracting 0 from 310 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Let's proceed to step 9:
When dividing 3100 by 426, we get 7 with a remainder of 118.
The next digit of our result is 7. 
Result so far: 21575.07
Subtracting 2982 from 3100 leaves us with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

On to step 10:
If we divide 1180 by 426, we get 2 and a remainder of 328.
The next digit of our result is 2. 
Result so far: 21575.072
Subtract 852 from 1180 to get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Advancing to step 11:
The number 426 fits into 3280 7 times, leaving a remainder of 298.
The next digit of our result is 7. 
Result so far: 21575.0727
Subtract 2982 from 3280 to get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

On to step 12:
426 goes into 2980 6 times with a remainder of 424.
Put 6 as the next digit of the answer. 
Result so far: 21575.07276
Subtracting 2556 from 2980 leaves us with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Step 13:
426 goes into 4240 9 times with a remainder of 406.
The number 9 becomes the next digit in our result. 
Result so far: 21575.072769
If we take 3834 away from 4240, we end up with 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Advancing to step 14:
When dividing 4060 by 426, we get 9 with a remainder of 226.
Use 9 as the next digit of our solution. 
Result so far: 21575.0727699
If we take 3834 away from 4060, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

The final outcome is 21575.0727699, with a leftover of 2.26e-06.