We look at the division of 891438 by 20 
We're looking to find how many times 20 goes into 891438.

On to step 1:
If we divide 8 by 20, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 20

On to step 2:
When dividing 89 by 20, we get 4 with a remainder of 9.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 80 from 89 and we're left with 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 20

Moving on to step 3:
91 divided by 20 is 4 with a remainder of 11.
Record the quotient 4 as the next digit in the result. 
Result so far: 44.0
Subtracting 80 from 91 leaves us with 11.
Fetch the next digit (4) from the dividend, attach it to 11 and continue: 114 / 20

Going ahead to step 4:
114 divided by 20 is 5 with a remainder of 14.
Put 5 as the next digit of the answer. 
Result so far: 445.0
If we subtract 100 from 114, we get 14.
Take the next digit (3) from the dividend and append it to 14, then repeat: 143 / 20

Advancing to step 5:
If we divide 143 by 20, we get 7 and a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 4457.0
The remainder is 3 after subtracting 140 from 143.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 20

Let's proceed to step 6:
38 divided by 20 is 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 44571.0
Deduct 20 from 38 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 7:
When dividing 180 by 20, we get 9 with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 44571.9
Subtract 180 from 180 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 44571.9
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 44571.9
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 44571.9 with a remaining 0.0.