139101 ÷ 3 
Our goal is to divide 139101 by 3.

Going ahead to step 1:
If we divide 1 by 3, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 3

Moving on to step 2:
3 goes into 13 4 times with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 12 from 13 leaves us with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 3

Moving on to step 3:
3 goes into 19 6 times with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
Subtract 18 from 19 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 3

Going ahead to step 4:
11 divided by 3 is 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 463.0
Subtract 9 from 11 to get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 3

Advancing to step 5:
The number 3 fits into 20 6 times, leaving a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 4636.0
The remainder is 2 after subtracting 18 from 20.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 3

On to step 6:
If we divide 21 by 3, we get 7 and a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 46367.0
Subtract 21 from 21 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 7:
3 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 46367.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
3 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 46367.0
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.

The final result is 46367.0 with a remainder of 0.0.