21990439 divided by 868 
The aim is to understand the frequency of 868 in 21990439.

Step 1:
When dividing 2 by 868, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 868

Step 2:
868 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 868

Let's proceed to step 3:
When dividing 219 by 868, we get 0 with a remainder of 219.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 219 to get 219.
Bring next digit (9) of the dividend behind the 219 and repeat the process: 2199 / 868

Step 4:
If we divide 2199 by 868, we get 2 and a remainder of 463.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 1736 from 2199 and we're left with 463.
Append the next digit (0) from the dividend to 463 and continue with: 4630 / 868

Let's proceed to step 5:
The number 868 fits into 4630 5 times, leaving a remainder of 290.
Use 5 as the next digit of our solution. 
Result so far: 25.0
If we take 4340 away from 4630, we end up with 290.
Bring next digit (4) of the dividend behind the 290 and repeat the process: 2904 / 868

Let's proceed to step 6:
If we divide 2904 by 868, we get 3 and a remainder of 300.
Write down 3 as next digit of the result. 
Result so far: 253.0
The remainder is 300 after subtracting 2604 from 2904.
Bring next digit (3) of the dividend behind the 300 and repeat the process: 3003 / 868

Advancing to step 7:
When dividing 3003 by 868, we get 3 with a remainder of 399.
Use 3 as the next digit of our solution. 
Result so far: 2533.0
If we take 2604 away from 3003, we end up with 399.
Include the next digit (9) from the dividend after 399, then repeat: 3999 / 868

Advancing to step 8:
When dividing 3999 by 868, we get 4 with a remainder of 527.
Put 4 as the next digit of the answer. 
Result so far: 25334.0
Subtract 3472 from 3999 to get 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

Step 9:
The number 868 fits into 5270 6 times, leaving a remainder of 62.
The number 6 becomes the next digit in our result. 
Result so far: 25334.6
Subtracting 5208 from 5270 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 10:
868 goes into 620 0 times with a remainder of 620.
Record the quotient 0 as the next digit in the result. 
Result so far: 25334.6
If we subtract 0 from 620, we get 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Step 11:
If we divide 6200 by 868, we get 7 and a remainder of 124.
Record the quotient 7 as the next digit in the result. 
Result so far: 25334.607
If we take 6076 away from 6200, we end up with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Moving on to step 12:
868 goes into 1240 1 times with a remainder of 372.
Write down 1 as next digit of the result. 
Result so far: 25334.6071
If we subtract 868 from 1240, we get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Advancing to step 13:
868 goes into 3720 4 times with a remainder of 248.
Put 4 as the next digit of the answer. 
Result so far: 25334.60714
If we take 3472 away from 3720, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 14:
868 can be fit into 2480 2 times, resulting in a remainder of 744.
Record the quotient 2 as the next digit in the result. 
Result so far: 25334.607142
Subtracting 1736 from 2480 leaves us with 744.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7440, and continue the process.

Going ahead to step 15:
When dividing 7440 by 868, we get 8 with a remainder of 496.
Use 8 as the next digit of our solution. 
Result so far: 25334.6071428
If we subtract 6944 from 7440, we get 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Step 16:
The number 868 fits into 4960 5 times, leaving a remainder of 620.
Use 5 as the next digit of our solution. 
Result so far: 25334.60714285
Deduct 4340 from 4960 and we're left with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

The quotient of the division is 25334.60714285, and the remainder is 6.2e-07.