18660 ÷ 58 
Let's see how many times 58 fits into 18660.

On to step 1:
The number 58 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 58

Step 2:
If we divide 18 by 58, we get 0 and a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Fetch the next digit (6) from the dividend, attach it to 18 and continue: 186 / 58

Moving on to step 3:
The number 58 fits into 186 3 times, leaving a remainder of 12.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 174 from 186, we get 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 58

Step 4:
When dividing 126 by 58, we get 2 with a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
If we take 116 away from 126, we end up with 10.
Append the next digit (0) from the dividend to 10 and continue with: 100 / 58

Advancing to step 5:
100 divided by 58 is 1 with a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 321.0
The remainder is 42 after subtracting 58 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 6:
If we divide 420 by 58, we get 7 and a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 321.7
Subtracting 406 from 420 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
58 goes into 140 2 times with a remainder of 24.
The next digit of our result is 2. 
Result so far: 321.72
Deduct 116 from 140 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 8:
58 can be fit into 240 4 times, resulting in a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 321.724
If we subtract 232 from 240, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
When dividing 80 by 58, we get 1 with a remainder of 22.
Record the quotient 1 as the next digit in the result. 
Result so far: 321.7241
If we subtract 58 from 80, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
58 can be fit into 220 3 times, resulting in a remainder of 46.
The number 3 becomes the next digit in our result. 
Result so far: 321.72413
Subtracting 174 from 220 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 11:
58 goes into 460 7 times with a remainder of 54.
The number 7 becomes the next digit in our result. 
Result so far: 321.724137
The remainder is 54 after subtracting 406 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 12:
540 divided by 58 is 9 with a remainder of 18.
The next digit of our result is 9. 
Result so far: 321.7241379
The remainder is 18 after subtracting 522 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 13:
180 divided by 58 is 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 321.72413793
Deduct 174 from 180 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 321.72413793 with a remainder of 6e-09.