18139148 ÷ 393 
We want to figure out the number of times 18139148 can be divided by 393.

On to step 1:
393 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 393

Let's proceed to step 2:
393 can be fit into 18 0 times, resulting in a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Take the next digit (1) from the dividend and append it to 18, then repeat: 181 / 393

Let's proceed to step 3:
393 can be fit into 181 0 times, resulting in a remainder of 181.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 181 to get 181.
Fetch the next digit (3) from the dividend, attach it to 181 and continue: 1813 / 393

Moving on to step 4:
When dividing 1813 by 393, we get 4 with a remainder of 241.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 1572 from 1813 to get 241.
Include the next digit (9) from the dividend after 241, then repeat: 2419 / 393

Step 5:
2419 divided by 393 is 6 with a remainder of 61.
Put 6 as the next digit of the answer. 
Result so far: 46.0
If we take 2358 away from 2419, we end up with 61.
Include the next digit (1) from the dividend after 61, then repeat: 611 / 393

Advancing to step 6:
393 can be fit into 611 1 times, resulting in a remainder of 218.
Write down 1 as next digit of the result. 
Result so far: 461.0
Deduct 393 from 611 and we're left with 218.
Fetch the next digit (4) from the dividend, attach it to 218 and continue: 2184 / 393

Moving on to step 7:
When dividing 2184 by 393, we get 5 with a remainder of 219.
Write down 5 as next digit of the result. 
Result so far: 4615.0
Subtract 1965 from 2184 to get 219.
Append the next digit (8) from the dividend to 219 and continue with: 2198 / 393

Advancing to step 8:
When dividing 2198 by 393, we get 5 with a remainder of 233.
Write down 5 as next digit of the result. 
Result so far: 46155.0
The remainder is 233 after subtracting 1965 from 2198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Moving on to step 9:
393 goes into 2330 5 times with a remainder of 365.
The next digit of our result is 5. 
Result so far: 46155.5
The remainder is 365 after subtracting 1965 from 2330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Going ahead to step 10:
When dividing 3650 by 393, we get 9 with a remainder of 113.
Put 9 as the next digit of the answer. 
Result so far: 46155.59
The remainder is 113 after subtracting 3537 from 3650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Moving on to step 11:
When dividing 1130 by 393, we get 2 with a remainder of 344.
Put 2 as the next digit of the answer. 
Result so far: 46155.592
If we subtract 786 from 1130, we get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

On to step 12:
393 can be fit into 3440 8 times, resulting in a remainder of 296.
Record the quotient 8 as the next digit in the result. 
Result so far: 46155.5928
Subtract 3144 from 3440 to get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

On to step 13:
The number 393 fits into 2960 7 times, leaving a remainder of 209.
Write down 7 as next digit of the result. 
Result so far: 46155.59287
The remainder is 209 after subtracting 2751 from 2960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Step 14:
393 can be fit into 2090 5 times, resulting in a remainder of 125.
The next digit of our result is 5. 
Result so far: 46155.592875
If we subtract 1965 from 2090, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 15:
393 goes into 1250 3 times with a remainder of 71.
The next digit of our result is 3. 
Result so far: 46155.5928753
If we subtract 1179 from 1250, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 16:
393 goes into 710 1 times with a remainder of 317.
Use 1 as the next digit of our solution. 
Result so far: 46155.59287531
Subtract 393 from 710 to get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

The quotient of the division is 46155.59287531, and the remainder is 3.17e-07.