4644540 divided by 166 
Let's see how many times 166 fits into 4644540.

Going ahead to step 1:
166 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (6) of the dividend behind the 4 and repeat the process: 46 / 166

On to step 2:
166 can be fit into 46 0 times, resulting in a remainder of 46.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 46 after subtracting 0 from 46.
Include the next digit (4) from the dividend after 46, then repeat: 464 / 166

Going ahead to step 3:
If we divide 464 by 166, we get 2 and a remainder of 132.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 332 from 464 and we're left with 132.
Append the next digit (4) from the dividend to 132 and continue with: 1324 / 166

Moving on to step 4:
If we divide 1324 by 166, we get 7 and a remainder of 162.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
Subtract 1162 from 1324 to get 162.
Include the next digit (5) from the dividend after 162, then repeat: 1625 / 166

On to step 5:
1625 divided by 166 is 9 with a remainder of 131.
Put 9 as the next digit of the answer. 
Result so far: 279.0
Subtract 1494 from 1625 to get 131.
Fetch the next digit (4) from the dividend, attach it to 131 and continue: 1314 / 166

Let's proceed to step 6:
1314 divided by 166 is 7 with a remainder of 152.
The number 7 becomes the next digit in our result. 
Result so far: 2797.0
If we take 1162 away from 1314, we end up with 152.
Take the next digit (0) from the dividend and append it to 152, then repeat: 1520 / 166

Going ahead to step 7:
If we divide 1520 by 166, we get 9 and a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 27979.0
Subtracting 1494 from 1520 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 8:
The number 166 fits into 260 1 times, leaving a remainder of 94.
The next digit of our result is 1. 
Result so far: 27979.1
If we subtract 166 from 260, we get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Going ahead to step 9:
When dividing 940 by 166, we get 5 with a remainder of 110.
The number 5 becomes the next digit in our result. 
Result so far: 27979.15
If we subtract 830 from 940, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Let's proceed to step 10:
If we divide 1100 by 166, we get 6 and a remainder of 104.
Put 6 as the next digit of the answer. 
Result so far: 27979.156
If we subtract 996 from 1100, we get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Going ahead to step 11:
166 goes into 1040 6 times with a remainder of 44.
Write down 6 as next digit of the result. 
Result so far: 27979.1566
If we subtract 996 from 1040, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 27979.1566, with a leftover of 0.00044.