21346045 ÷ 751 
We want to figure out the number of times 21346045 can be divided by 751.

Advancing to step 1:
The number 751 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in 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 / 751

Going ahead to step 2:
751 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
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 751

Advancing to step 3:
751 goes into 213 0 times with a remainder of 213.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 213 to get 213.
Fetch the next digit (4) from the dividend, attach it to 213 and continue: 2134 / 751

Advancing to step 4:
If we divide 2134 by 751, we get 2 and a remainder of 632.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 1502 from 2134 leaves us with 632.
Append the next digit (6) from the dividend to 632 and continue with: 6326 / 751

Step 5:
751 can be fit into 6326 8 times, resulting in a remainder of 318.
Put 8 as the next digit of the answer. 
Result so far: 28.0
If we take 6008 away from 6326, we end up with 318.
Fetch the next digit (0) from the dividend, attach it to 318 and continue: 3180 / 751

On to step 6:
751 goes into 3180 4 times with a remainder of 176.
Write down 4 as next digit of the result. 
Result so far: 284.0
Subtracting 3004 from 3180 leaves us with 176.
Take the next digit (4) from the dividend and append it to 176, then repeat: 1764 / 751

Advancing to step 7:
The number 751 fits into 1764 2 times, leaving a remainder of 262.
Write down 2 as next digit of the result. 
Result so far: 2842.0
The remainder is 262 after subtracting 1502 from 1764.
Grab the next digit (5) from the dividend, add it to 262, then carry on: 2625 / 751

Moving on to step 8:
When dividing 2625 by 751, we get 3 with a remainder of 372.
Put 3 as the next digit of the answer. 
Result so far: 28423.0
If we subtract 2253 from 2625, we get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Moving on to step 9:
3720 divided by 751 is 4 with a remainder of 716.
The number 4 becomes the next digit in our result. 
Result so far: 28423.4
The remainder is 716 after subtracting 3004 from 3720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7160, and continue the process.

Moving on to step 10:
7160 divided by 751 is 9 with a remainder of 401.
The number 9 becomes the next digit in our result. 
Result so far: 28423.49
Deduct 6759 from 7160 and we're left with 401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

Advancing to step 11:
751 goes into 4010 5 times with a remainder of 255.
The next digit of our result is 5. 
Result so far: 28423.495
If we take 3755 away from 4010, we end up with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Advancing to step 12:
751 goes into 2550 3 times with a remainder of 297.
Write down 3 as next digit of the result. 
Result so far: 28423.4953
Subtracting 2253 from 2550 leaves us with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Advancing to step 13:
751 can be fit into 2970 3 times, resulting in a remainder of 717.
Use 3 as the next digit of our solution. 
Result so far: 28423.49533
The remainder is 717 after subtracting 2253 from 2970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7170, and continue the process.

The final outcome is 28423.49533, with a leftover of 0.000717.