51849 ÷ 30 
We want to figure out the number of times 51849 can be divided by 30.

Step 1:
30 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 30

Step 2:
30 goes into 51 1 times with a remainder of 21.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 30 from 51 to get 21.
Grab the next digit (8) from the dividend, add it to 21, then carry on: 218 / 30

Moving on to step 3:
30 goes into 218 7 times with a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtracting 210 from 218 leaves us with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 30

Step 4:
30 can be fit into 84 2 times, resulting in a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 172.0
If we subtract 60 from 84, we get 24.
Take the next digit (9) from the dividend and append it to 24, then repeat: 249 / 30

Let's proceed to step 5:
30 can be fit into 249 8 times, resulting in a remainder of 9.
The number 8 becomes the next digit in our result. 
Result so far: 1728.0
Deduct 240 from 249 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 6:
The number 30 fits into 90 3 times, leaving a remainder of 0.
The next digit of our result is 3. 
Result so far: 1728.3
The remainder is 0 after subtracting 90 from 90.
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 7:
When dividing 0 by 30, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 1728.3
Subtract 0 from 0 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.

Going ahead to step 8:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1728.3
The remainder is 0 after subtracting 0 from 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 1728.3 with a remainder of 0.0.