21943890 divided by 507 
Our goal is to divide 21943890 by 507.

On to step 1:
When dividing 2 by 507, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 507

Advancing to step 2:
507 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
Subtract 0 from 21 to get 21.
Fetch the next digit (9) from the dividend, attach it to 21 and continue: 219 / 507

Moving on to step 3:
If we divide 219 by 507, we get 0 and a remainder of 219.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 219, we get 219.
Grab the next digit (4) from the dividend, add it to 219, then carry on: 2194 / 507

Step 4:
507 goes into 2194 4 times with a remainder of 166.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 2028 from 2194 and we're left with 166.
Grab the next digit (3) from the dividend, add it to 166, then carry on: 1663 / 507

Going ahead to step 5:
The number 507 fits into 1663 3 times, leaving a remainder of 142.
Use 3 as the next digit of our solution. 
Result so far: 43.0
Subtract 1521 from 1663 to get 142.
Append the next digit (8) from the dividend to 142 and continue with: 1428 / 507

On to step 6:
507 can be fit into 1428 2 times, resulting in a remainder of 414.
Use 2 as the next digit of our solution. 
Result so far: 432.0
Deduct 1014 from 1428 and we're left with 414.
Bring next digit (9) of the dividend behind the 414 and repeat the process: 4149 / 507

Going ahead to step 7:
507 goes into 4149 8 times with a remainder of 93.
Put 8 as the next digit of the answer. 
Result so far: 4328.0
If we take 4056 away from 4149, we end up with 93.
Append the next digit (0) from the dividend to 93 and continue with: 930 / 507

Advancing to step 8:
If we divide 930 by 507, we get 1 and a remainder of 423.
Write down 1 as next digit of the result. 
Result so far: 43281.0
Subtract 507 from 930 to get 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Going ahead to step 9:
The number 507 fits into 4230 8 times, leaving a remainder of 174.
Write down 8 as next digit of the result. 
Result so far: 43281.8
Subtract 4056 from 4230 to get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Let's proceed to step 10:
If we divide 1740 by 507, we get 3 and a remainder of 219.
Write down 3 as next digit of the result. 
Result so far: 43281.83
If we subtract 1521 from 1740, we get 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Going ahead to step 11:
The number 507 fits into 2190 4 times, leaving a remainder of 162.
Record the quotient 4 as the next digit in the result. 
Result so far: 43281.834
If we subtract 2028 from 2190, we get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Moving on to step 12:
The number 507 fits into 1620 3 times, leaving a remainder of 99.
Use 3 as the next digit of our solution. 
Result so far: 43281.8343
Deduct 1521 from 1620 and we're left with 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

On to step 13:
990 divided by 507 is 1 with a remainder of 483.
Record the quotient 1 as the next digit in the result. 
Result so far: 43281.83431
Subtracting 507 from 990 leaves us with 483.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

Going ahead to step 14:
The number 507 fits into 4830 9 times, leaving a remainder of 267.
Use 9 as the next digit of our solution. 
Result so far: 43281.834319
The remainder is 267 after subtracting 4563 from 4830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Moving on to step 15:
507 can be fit into 2670 5 times, resulting in a remainder of 135.
The next digit of our result is 5. 
Result so far: 43281.8343195
Deduct 2535 from 2670 and we're left with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

On to step 16:
507 can be fit into 1350 2 times, resulting in a remainder of 336.
Use 2 as the next digit of our solution. 
Result so far: 43281.83431952
Subtracting 1014 from 1350 leaves us with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

In conclusion, the division gives 43281.83431952 with a balance of 3.36e-07.