21174670 ÷ 766 
We want to divide 21174670 by 766.

Going ahead to step 1:
When dividing 2 by 766, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 766

On to step 2:
766 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Bring next digit (1) of the dividend behind the 21 and repeat the process: 211 / 766

Going ahead to step 3:
211 divided by 766 is 0 with a remainder of 211.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 211, we get 211.
Include the next digit (7) from the dividend after 211, then repeat: 2117 / 766

Advancing to step 4:
766 goes into 2117 2 times with a remainder of 585.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 1532 from 2117 leaves us with 585.
Bring next digit (4) of the dividend behind the 585 and repeat the process: 5854 / 766

Moving on to step 5:
5854 divided by 766 is 7 with a remainder of 492.
The next digit of our result is 7. 
Result so far: 27.0
If we subtract 5362 from 5854, we get 492.
Bring next digit (6) of the dividend behind the 492 and repeat the process: 4926 / 766

Advancing to step 6:
4926 divided by 766 is 6 with a remainder of 330.
The next digit of our result is 6. 
Result so far: 276.0
If we take 4596 away from 4926, we end up with 330.
Fetch the next digit (7) from the dividend, attach it to 330 and continue: 3307 / 766

Going ahead to step 7:
When dividing 3307 by 766, we get 4 with a remainder of 243.
The number 4 becomes the next digit in our result. 
Result so far: 2764.0
Subtracting 3064 from 3307 leaves us with 243.
Grab the next digit (0) from the dividend, add it to 243, then carry on: 2430 / 766

Let's proceed to step 8:
If we divide 2430 by 766, we get 3 and a remainder of 132.
Use 3 as the next digit of our solution. 
Result so far: 27643.0
Subtracting 2298 from 2430 leaves us with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 9:
766 can be fit into 1320 1 times, resulting in a remainder of 554.
The next digit of our result is 1. 
Result so far: 27643.1
Subtract 766 from 1320 to get 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Step 10:
766 goes into 5540 7 times with a remainder of 178.
Write down 7 as next digit of the result. 
Result so far: 27643.17
If we take 5362 away from 5540, we end up with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Advancing to step 11:
766 goes into 1780 2 times with a remainder of 248.
Put 2 as the next digit of the answer. 
Result so far: 27643.172
Subtracting 1532 from 1780 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 12:
If we divide 2480 by 766, we get 3 and a remainder of 182.
Use 3 as the next digit of our solution. 
Result so far: 27643.1723
Subtract 2298 from 2480 to get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Let's proceed to step 13:
766 can be fit into 1820 2 times, resulting in a remainder of 288.
Write down 2 as next digit of the result. 
Result so far: 27643.17232
Deduct 1532 from 1820 and we're left with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

On to step 14:
If we divide 2880 by 766, we get 3 and a remainder of 582.
Record the quotient 3 as the next digit in the result. 
Result so far: 27643.172323
If we take 2298 away from 2880, we end up with 582.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5820, and continue the process.

On to step 15:
When dividing 5820 by 766, we get 7 with a remainder of 458.
Write down 7 as next digit of the result. 
Result so far: 27643.1723237
Deduct 5362 from 5820 and we're left with 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Step 16:
766 goes into 4580 5 times with a remainder of 750.
The number 5 becomes the next digit in our result. 
Result so far: 27643.17232375
Subtract 3830 from 4580 to get 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

The final outcome is 27643.17232375, with a leftover of 7.5e-07.