We're dividing 139188 by 19 
We want to divide 139188 by 19.

Let's proceed to step 1:
The number 19 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
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 / 19

Going ahead to step 2:
19 goes into 13 0 times with a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Take the next digit (9) from the dividend and append it to 13, then repeat: 139 / 19

Let's proceed to step 3:
139 divided by 19 is 7 with a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 133 from 139 leaves us with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 19

Step 4:
19 goes into 61 3 times with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 73.0
Subtracting 57 from 61 leaves us with 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 19

Step 5:
48 divided by 19 is 2 with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 732.0
Subtract 38 from 48 to get 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 19

Moving on to step 6:
The number 19 fits into 108 5 times, leaving a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 7325.0
Subtracting 95 from 108 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 7:
19 can be fit into 130 6 times, resulting in a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 7325.6
If we subtract 114 from 130, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
160 divided by 19 is 8 with a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 7325.68
The remainder is 8 after subtracting 152 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
80 divided by 19 is 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 7325.684
Subtracting 76 from 80 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
40 divided by 19 is 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 7325.6842
If we subtract 38 from 40, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 11:
The number 19 fits into 20 1 times, leaving a remainder of 1.
The next digit of our result is 1. 
Result so far: 7325.68421
Subtracting 19 from 20 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 12:
If we divide 10 by 19, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 7325.68421
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
If we divide 100 by 19, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 7325.6842105
If we take 95 away from 100, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 14:
50 divided by 19 is 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 7325.68421052
If we subtract 38 from 50, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 7325.68421052, with a leftover of 1.2e-08.