21542453 divided by 345 
Let's see how many times 345 fits into 21542453.

Step 1:
When dividing 2 by 345, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 345

Let's proceed to step 2:
The number 345 fits into 21 0 times, leaving a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Take the next digit (5) from the dividend and append it to 21, then repeat: 215 / 345

Going ahead to step 3:
345 goes into 215 0 times with a remainder of 215.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 215 after subtracting 0 from 215.
Grab the next digit (4) from the dividend, add it to 215, then carry on: 2154 / 345

On to step 4:
The number 345 fits into 2154 6 times, leaving a remainder of 84.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 2070 from 2154 leaves us with 84.
Bring next digit (2) of the dividend behind the 84 and repeat the process: 842 / 345

Step 5:
When dividing 842 by 345, we get 2 with a remainder of 152.
Write down 2 as next digit of the result. 
Result so far: 62.0
Deduct 690 from 842 and we're left with 152.
Fetch the next digit (4) from the dividend, attach it to 152 and continue: 1524 / 345

Advancing to step 6:
The number 345 fits into 1524 4 times, leaving a remainder of 144.
The number 4 becomes the next digit in our result. 
Result so far: 624.0
Subtract 1380 from 1524 to get 144.
Include the next digit (5) from the dividend after 144, then repeat: 1445 / 345

Step 7:
The number 345 fits into 1445 4 times, leaving a remainder of 65.
Use 4 as the next digit of our solution. 
Result so far: 6244.0
Subtract 1380 from 1445 to get 65.
Bring next digit (3) of the dividend behind the 65 and repeat the process: 653 / 345

Moving on to step 8:
653 divided by 345 is 1 with a remainder of 308.
Record the quotient 1 as the next digit in the result. 
Result so far: 62441.0
Subtract 345 from 653 to get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Let's proceed to step 9:
The number 345 fits into 3080 8 times, leaving a remainder of 320.
Use 8 as the next digit of our solution. 
Result so far: 62441.8
If we subtract 2760 from 3080, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 10:
3200 divided by 345 is 9 with a remainder of 95.
Record the quotient 9 as the next digit in the result. 
Result so far: 62441.89
Subtracting 3105 from 3200 leaves us with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Advancing to step 11:
When dividing 950 by 345, we get 2 with a remainder of 260.
Put 2 as the next digit of the answer. 
Result so far: 62441.892
Deduct 690 from 950 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 12:
345 goes into 2600 7 times with a remainder of 185.
Use 7 as the next digit of our solution. 
Result so far: 62441.8927
Subtracting 2415 from 2600 leaves us with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Step 13:
If we divide 1850 by 345, we get 5 and a remainder of 125.
Record the quotient 5 as the next digit in the result. 
Result so far: 62441.89275
Subtracting 1725 from 1850 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 14:
The number 345 fits into 1250 3 times, leaving a remainder of 215.
Use 3 as the next digit of our solution. 
Result so far: 62441.892753
If we take 1035 away from 1250, we end up with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Step 15:
When dividing 2150 by 345, we get 6 with a remainder of 80.
Use 6 as the next digit of our solution. 
Result so far: 62441.8927536
If we take 2070 away from 2150, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 16:
345 can be fit into 800 2 times, resulting in a remainder of 110.
The next digit of our result is 2. 
Result so far: 62441.89275362
Subtracting 690 from 800 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

The quotient of the division is 62441.89275362, and the remainder is 1.1e-07.