21858554 ÷ 600 
Let's see how many times 600 fits into 21858554.

Let's proceed to step 1:
600 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 600

Advancing to step 2:
600 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Grab the next digit (8) from the dividend, add it to 21, then carry on: 218 / 600

Let's proceed to step 3:
600 can be fit into 218 0 times, resulting in a remainder of 218.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 218, we get 218.
Include the next digit (5) from the dividend after 218, then repeat: 2185 / 600

Step 4:
If we divide 2185 by 600, we get 3 and a remainder of 385.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 1800 from 2185 leaves us with 385.
Grab the next digit (8) from the dividend, add it to 385, then carry on: 3858 / 600

Going ahead to step 5:
If we divide 3858 by 600, we get 6 and a remainder of 258.
Use 6 as the next digit of our solution. 
Result so far: 36.0
Subtracting 3600 from 3858 leaves us with 258.
Fetch the next digit (5) from the dividend, attach it to 258 and continue: 2585 / 600

On to step 6:
600 can be fit into 2585 4 times, resulting in a remainder of 185.
The number 4 becomes the next digit in our result. 
Result so far: 364.0
The remainder is 185 after subtracting 2400 from 2585.
Include the next digit (5) from the dividend after 185, then repeat: 1855 / 600

Going ahead to step 7:
If we divide 1855 by 600, we get 3 and a remainder of 55.
Write down 3 as next digit of the result. 
Result so far: 3643.0
The remainder is 55 after subtracting 1800 from 1855.
Grab the next digit (4) from the dividend, add it to 55, then carry on: 554 / 600

Advancing to step 8:
The number 600 fits into 554 0 times, leaving a remainder of 554.
Record the quotient 0 as the next digit in the result. 
Result so far: 36430.0
If we take 0 away from 554, we end up with 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Going ahead to step 9:
If we divide 5540 by 600, we get 9 and a remainder of 140.
Record the quotient 9 as the next digit in the result. 
Result so far: 36430.9
The remainder is 140 after subtracting 5400 from 5540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 10:
When dividing 1400 by 600, we get 2 with a remainder of 200.
The next digit of our result is 2. 
Result so far: 36430.92
If we take 1200 away from 1400, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 11:
The number 600 fits into 2000 3 times, leaving a remainder of 200.
The next digit of our result is 3. 
Result so far: 36430.923
If we subtract 1800 from 2000, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 12:
If we divide 2000 by 600, we get 3 and a remainder of 200.
Put 3 as the next digit of the answer. 
Result so far: 36430.9233
Subtract 1800 from 2000 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final outcome is 36430.9233, with a leftover of 0.002.