We look at the division of 21259 by 49 
Let's see how many times 49 fits into 21259.

Let's proceed to step 1:
49 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 49

On to step 2:
49 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Bring next digit (2) of the dividend behind the 21 and repeat the process: 212 / 49

Moving on to step 3:
212 divided by 49 is 4 with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 196 from 212 to get 16.
Bring next digit (5) of the dividend behind the 16 and repeat the process: 165 / 49

Going ahead to step 4:
49 goes into 165 3 times with a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 43.0
The remainder is 18 after subtracting 147 from 165.
Bring next digit (9) of the dividend behind the 18 and repeat the process: 189 / 49

Moving on to step 5:
49 can be fit into 189 3 times, resulting in a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 433.0
If we subtract 147 from 189, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 6:
420 divided by 49 is 8 with a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 433.8
If we subtract 392 from 420, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 7:
If we divide 280 by 49, we get 5 and a remainder of 35.
The next digit of our result is 5. 
Result so far: 433.85
If we take 245 away from 280, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 8:
The number 49 fits into 350 7 times, leaving a remainder of 7.
Put 7 as the next digit of the answer. 
Result so far: 433.857
Deduct 343 from 350 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 9:
When dividing 70 by 49, we get 1 with a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 433.8571
Subtracting 49 from 70 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 10:
49 goes into 210 4 times with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 433.85714
If we subtract 196 from 210, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 11:
When dividing 140 by 49, we get 2 with a remainder of 42.
The number 2 becomes the next digit in our result. 
Result so far: 433.857142
If we take 98 away from 140, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 12:
49 goes into 420 8 times with a remainder of 28.
Write down 8 as next digit of the result. 
Result so far: 433.8571428
Subtract 392 from 420 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 13:
49 goes into 280 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 433.85714285
The remainder is 35 after subtracting 245 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 433.85714285, with a leftover of 3.5e-08.