894374 ÷ 21 
We want to figure out the number of times 894374 can be divided by 21.

Moving on to step 1:
The number 21 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 21

Going ahead to step 2:
The number 21 fits into 89 4 times, leaving a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 84 away from 89, we end up with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 21

On to step 3:
54 divided by 21 is 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 42.0
Subtract 42 from 54 to get 12.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 21

On to step 4:
When dividing 123 by 21, we get 5 with a remainder of 18.
Put 5 as the next digit of the answer. 
Result so far: 425.0
If we take 105 away from 123, we end up with 18.
Include the next digit (7) from the dividend after 18, then repeat: 187 / 21

Advancing to step 5:
21 goes into 187 8 times with a remainder of 19.
The number 8 becomes the next digit in our result. 
Result so far: 4258.0
If we take 168 away from 187, we end up with 19.
Grab the next digit (4) from the dividend, add it to 19, then carry on: 194 / 21

Moving on to step 6:
The number 21 fits into 194 9 times, leaving a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 42589.0
Subtracting 189 from 194 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 42589.2
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
80 divided by 21 is 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 42589.23
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 9:
The number 21 fits into 170 8 times, leaving a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 42589.238
Deduct 168 from 170 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 10:
The number 21 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 42589.238
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 11:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 42589.23809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 12:
110 divided by 21 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 42589.238095
If we subtract 105 from 110, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 13:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 42589.2380952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 14:
21 can be fit into 80 3 times, resulting in a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 42589.23809523
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The quotient of the division is 42589.23809523, and the remainder is 1.7e-08.