We're dividing 20154589 by 7 
We're looking to find how many times 7 goes into 20154589.

On to step 1:
When dividing 2 by 7, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 7

On to step 2:
7 goes into 20 2 times with a remainder of 6.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 14 from 20 and we're left with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 7

Let's proceed to step 3:
When dividing 61 by 7, we get 8 with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
Deduct 56 from 61 and we're left with 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 7

Let's proceed to step 4:
The number 7 fits into 55 7 times, leaving a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 287.0
Subtracting 49 from 55 leaves us with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 7

Advancing to step 5:
64 divided by 7 is 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 2879.0
Subtracting 63 from 64 leaves us with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 7

Advancing to step 6:
15 divided by 7 is 2 with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 28792.0
Deduct 14 from 15 and we're left with 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 7

On to step 7:
18 divided by 7 is 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 287922.0
Subtracting 14 from 18 leaves us with 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 7

On to step 8:
If we divide 49 by 7, we get 7 and a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 2879227.0
Subtract 49 from 49 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.

Let's proceed to step 9:
When dividing 0 by 7, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 2879227.0
Subtract 0 from 0 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.

Advancing to step 10:
If we divide 0 by 7, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 2879227.0
If we subtract 0 from 0, we 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.

After the division, we end up with 2879227.0 and a remainder of 0.0.