768005 divided by 21 
We're looking to find how many times 21 goes into 768005.

Let's proceed to step 1:
7 divided by 21 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 21

Going ahead to step 2:
When dividing 76 by 21, we get 3 with a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 13 after subtracting 63 from 76.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 21

Going ahead to step 3:
21 can be fit into 138 6 times, resulting in a remainder of 12.
The next digit of our result is 6. 
Result so far: 36.0
Deduct 126 from 138 and we're left with 12.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 21

Step 4:
When dividing 120 by 21, we get 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 365.0
Deduct 105 from 120 and we're left with 15.
Take the next digit (0) from the dividend and append it to 15, then repeat: 150 / 21

Step 5:
If we divide 150 by 21, we get 7 and a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 3657.0
If we subtract 147 from 150, we get 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 21

Let's proceed to step 6:
21 goes into 35 1 times with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 36571.0
If we take 21 away from 35, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
If we divide 140 by 21, we get 6 and a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 36571.6
Subtracting 126 from 140 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
When dividing 140 by 21, we get 6 with a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 36571.66
If we take 126 away from 140, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final outcome is 36571.66, with a leftover of 0.014.