909869 divided by 51 
We're looking to find how many times 51 goes into 909869.

Moving on to step 1:
51 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 51

On to step 2:
If we divide 90 by 51, we get 1 and a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 51 from 90 to get 39.
Append the next digit (9) from the dividend to 39 and continue with: 399 / 51

On to step 3:
399 divided by 51 is 7 with a remainder of 42.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
The remainder is 42 after subtracting 357 from 399.
Include the next digit (8) from the dividend after 42, then repeat: 428 / 51

Let's proceed to step 4:
428 divided by 51 is 8 with a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 178.0
If we take 408 away from 428, we end up with 20.
Take the next digit (6) from the dividend and append it to 20, then repeat: 206 / 51

Going ahead to step 5:
When dividing 206 by 51, we get 4 with a remainder of 2.
The next digit of our result is 4. 
Result so far: 1784.0
Subtract 204 from 206 to get 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 51

Let's proceed to step 6:
The number 51 fits into 29 0 times, leaving a remainder of 29.
Use 0 as the next digit of our solution. 
Result so far: 17840.0
If we take 0 away from 29, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 7:
If we divide 290 by 51, we get 5 and a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 17840.5
The remainder is 35 after subtracting 255 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 8:
51 can be fit into 350 6 times, resulting in a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 17840.56
Subtracting 306 from 350 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 9:
51 goes into 440 8 times with a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 17840.568
The remainder is 32 after subtracting 408 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 10:
When dividing 320 by 51, we get 6 with a remainder of 14.
The next digit of our result is 6. 
Result so far: 17840.5686
Subtract 306 from 320 to 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.

Moving on to step 11:
The number 51 fits into 140 2 times, leaving a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 17840.56862
Subtract 102 from 140 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 12:
When dividing 380 by 51, we get 7 with a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 17840.568627
The remainder is 23 after subtracting 357 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 13:
230 divided by 51 is 4 with a remainder of 26.
Put 4 as the next digit of the answer. 
Result so far: 17840.5686274
Deduct 204 from 230 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 14:
51 can be fit into 260 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 17840.56862745
Subtract 255 from 260 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 17840.56862745, with a leftover of 5e-09.