We're dividing 89186686 by 978 
We want to divide 89186686 by 978.

Step 1:
If we divide 8 by 978, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 978

Advancing to step 2:
The number 978 fits into 89 0 times, leaving a remainder of 89.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 89 and we're left with 89.
Bring next digit (1) of the dividend behind the 89 and repeat the process: 891 / 978

Going ahead to step 3:
The number 978 fits into 891 0 times, leaving a remainder of 891.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 891 leaves us with 891.
Fetch the next digit (8) from the dividend, attach it to 891 and continue: 8918 / 978

Moving on to step 4:
When dividing 8918 by 978, we get 9 with a remainder of 116.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 8802 from 8918, we get 116.
Take the next digit (6) from the dividend and append it to 116, then repeat: 1166 / 978

Advancing to step 5:
978 can be fit into 1166 1 times, resulting in a remainder of 188.
Record the quotient 1 as the next digit in the result. 
Result so far: 91.0
Subtract 978 from 1166 to get 188.
Append the next digit (6) from the dividend to 188 and continue with: 1886 / 978

Advancing to step 6:
1886 divided by 978 is 1 with a remainder of 908.
Use 1 as the next digit of our solution. 
Result so far: 911.0
The remainder is 908 after subtracting 978 from 1886.
Grab the next digit (8) from the dividend, add it to 908, then carry on: 9088 / 978

Let's proceed to step 7:
When dividing 9088 by 978, we get 9 with a remainder of 286.
The number 9 becomes the next digit in our result. 
Result so far: 9119.0
If we subtract 8802 from 9088, we get 286.
Append the next digit (6) from the dividend to 286 and continue with: 2866 / 978

Step 8:
978 can be fit into 2866 2 times, resulting in a remainder of 910.
Use 2 as the next digit of our solution. 
Result so far: 91192.0
Subtract 1956 from 2866 to get 910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9100, and continue the process.

Going ahead to step 9:
978 goes into 9100 9 times with a remainder of 298.
Record the quotient 9 as the next digit in the result. 
Result so far: 91192.9
Subtract 8802 from 9100 to get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Step 10:
978 goes into 2980 3 times with a remainder of 46.
Write down 3 as next digit of the result. 
Result so far: 91192.93
Subtract 2934 from 2980 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 11:
978 goes into 460 0 times with a remainder of 460.
Write down 0 as next digit of the result. 
Result so far: 91192.93
The remainder is 460 after subtracting 0 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Moving on to step 12:
If we divide 4600 by 978, we get 4 and a remainder of 688.
The number 4 becomes the next digit in our result. 
Result so far: 91192.9304
Subtracting 3912 from 4600 leaves us with 688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

Step 13:
If we divide 6880 by 978, we get 7 and a remainder of 34.
The next digit of our result is 7. 
Result so far: 91192.93047
Deduct 6846 from 6880 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 14:
If we divide 340 by 978, we get 0 and a remainder of 340.
Write down 0 as next digit of the result. 
Result so far: 91192.93047
Subtract 0 from 340 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Let's proceed to step 15:
978 goes into 3400 3 times with a remainder of 466.
The number 3 becomes the next digit in our result. 
Result so far: 91192.9304703
If we take 2934 away from 3400, we end up with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

On to step 16:
978 goes into 4660 4 times with a remainder of 748.
Put 4 as the next digit of the answer. 
Result so far: 91192.93047034
If we subtract 3912 from 4660, we get 748.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

After the division, we end up with 91192.93047034 and a remainder of 7.48e-07.