Let's divide 138594 by 9
We want to figure out the number of times 138594 can be divided by 9.

Step 1:
The number 9 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 9

Step 2:
9 goes into 13 1 times with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 4 after subtracting 9 from 13.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 9

Advancing to step 3:
9 goes into 48 5 times with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 45 from 48 and we're left with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 9

Moving on to step 4:
35 divided by 9 is 3 with a remainder of 8.
The next digit of our result is 3. 
Result so far: 153.0
The remainder is 8 after subtracting 27 from 35.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 9

Going ahead to step 5:
If we divide 89 by 9, we get 9 and a remainder of 8.
The next digit of our result is 9. 
Result so far: 1539.0
Deduct 81 from 89 and we're left with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 9

Moving on to step 6:
84 divided by 9 is 9 with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 15399.0
If we subtract 81 from 84, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
When dividing 30 by 9, we get 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 15399.3
If we take 27 away from 30, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 8:
30 divided by 9 is 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 15399.33
Deduct 27 from 30 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final result is 15399.33 with a remainder of 0.003.