10401589 divided by 867 
The aim is to understand the frequency of 867 in 10401589.

Going ahead to step 1:
1 divided by 867 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 867

Step 2:
The number 867 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 10, we end up with 10.
Append the next digit (4) from the dividend to 10 and continue with: 104 / 867

Advancing to step 3:
When dividing 104 by 867, we get 0 with a remainder of 104.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 104 to get 104.
Include the next digit (0) from the dividend after 104, then repeat: 1040 / 867

Advancing to step 4:
867 can be fit into 1040 1 times, resulting in a remainder of 173.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 173 after subtracting 867 from 1040.
Bring next digit (1) of the dividend behind the 173 and repeat the process: 1731 / 867

Let's proceed to step 5:
867 goes into 1731 1 times with a remainder of 864.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtract 867 from 1731 to get 864.
Bring next digit (5) of the dividend behind the 864 and repeat the process: 8645 / 867

On to step 6:
If we divide 8645 by 867, we get 9 and a remainder of 842.
Record the quotient 9 as the next digit in the result. 
Result so far: 119.0
The remainder is 842 after subtracting 7803 from 8645.
Take the next digit (8) from the dividend and append it to 842, then repeat: 8428 / 867

Let's proceed to step 7:
The number 867 fits into 8428 9 times, leaving a remainder of 625.
Use 9 as the next digit of our solution. 
Result so far: 1199.0
Deduct 7803 from 8428 and we're left with 625.
Fetch the next digit (9) from the dividend, attach it to 625 and continue: 6259 / 867

On to step 8:
867 can be fit into 6259 7 times, resulting in a remainder of 190.
The next digit of our result is 7. 
Result so far: 11997.0
Subtract 6069 from 6259 to get 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 9:
867 can be fit into 1900 2 times, resulting in a remainder of 166.
The next digit of our result is 2. 
Result so far: 11997.2
Subtract 1734 from 1900 to get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Moving on to step 10:
If we divide 1660 by 867, we get 1 and a remainder of 793.
The number 1 becomes the next digit in our result. 
Result so far: 11997.21
If we take 867 away from 1660, we end up with 793.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7930, and continue the process.

Step 11:
7930 divided by 867 is 9 with a remainder of 127.
Use 9 as the next digit of our solution. 
Result so far: 11997.219
Subtract 7803 from 7930 to get 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Advancing to step 12:
If we divide 1270 by 867, we get 1 and a remainder of 403.
Use 1 as the next digit of our solution. 
Result so far: 11997.2191
Subtracting 867 from 1270 leaves us with 403.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

On to step 13:
867 goes into 4030 4 times with a remainder of 562.
Put 4 as the next digit of the answer. 
Result so far: 11997.21914
Subtracting 3468 from 4030 leaves us with 562.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Going ahead to step 14:
867 can be fit into 5620 6 times, resulting in a remainder of 418.
Write down 6 as next digit of the result. 
Result so far: 11997.219146
The remainder is 418 after subtracting 5202 from 5620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Step 15:
The number 867 fits into 4180 4 times, leaving a remainder of 712.
The number 4 becomes the next digit in our result. 
Result so far: 11997.2191464
Subtracting 3468 from 4180 leaves us with 712.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7120, and continue the process.

Let's proceed to step 16:
7120 divided by 867 is 8 with a remainder of 184.
The next digit of our result is 8. 
Result so far: 11997.21914648
Subtract 6936 from 7120 to get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

After the division, we end up with 11997.21914648 and a remainder of 1.84e-07.