78302560 ÷ 166 
We're looking to find how many times 166 goes into 78302560.

Let's proceed to step 1:
The number 166 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 166

Step 2:
The number 166 fits into 78 0 times, leaving a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Bring next digit (3) of the dividend behind the 78 and repeat the process: 783 / 166

Advancing to step 3:
166 goes into 783 4 times with a remainder of 119.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 664 from 783 to get 119.
Bring next digit (0) of the dividend behind the 119 and repeat the process: 1190 / 166

Moving on to step 4:
If we divide 1190 by 166, we get 7 and a remainder of 28.
The number 7 becomes the next digit in our result. 
Result so far: 47.0
Subtract 1162 from 1190 to get 28.
Fetch the next digit (2) from the dividend, attach it to 28 and continue: 282 / 166

On to step 5:
If we divide 282 by 166, we get 1 and a remainder of 116.
Write down 1 as next digit of the result. 
Result so far: 471.0
If we subtract 166 from 282, we get 116.
Append the next digit (5) from the dividend to 116 and continue with: 1165 / 166

Let's proceed to step 6:
The number 166 fits into 1165 7 times, leaving a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 4717.0
If we take 1162 away from 1165, we end up with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 166

Moving on to step 7:
When dividing 36 by 166, we get 0 with a remainder of 36.
Put 0 as the next digit of the answer. 
Result so far: 47170.0
Subtracting 0 from 36 leaves us with 36.
Append the next digit (0) from the dividend to 36 and continue with: 360 / 166

Step 8:
The number 166 fits into 360 2 times, leaving a remainder of 28.
The next digit of our result is 2. 
Result so far: 471702.0
If we subtract 332 from 360, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 9:
If we divide 280 by 166, we get 1 and a remainder of 114.
The number 1 becomes the next digit in our result. 
Result so far: 471702.1
Subtracting 166 from 280 leaves us with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Moving on to step 10:
When dividing 1140 by 166, we get 6 with a remainder of 144.
Write down 6 as next digit of the result. 
Result so far: 471702.16
Deduct 996 from 1140 and we're left with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 11:
1440 divided by 166 is 8 with a remainder of 112.
Record the quotient 8 as the next digit in the result. 
Result so far: 471702.168
Subtracting 1328 from 1440 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 12:
The number 166 fits into 1120 6 times, leaving a remainder of 124.
The number 6 becomes the next digit in our result. 
Result so far: 471702.1686
The remainder is 124 after subtracting 996 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

On to step 13:
The number 166 fits into 1240 7 times, leaving a remainder of 78.
Put 7 as the next digit of the answer. 
Result so far: 471702.16867
If we subtract 1162 from 1240, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 14:
The number 166 fits into 780 4 times, leaving a remainder of 116.
Write down 4 as next digit of the result. 
Result so far: 471702.168674
Deduct 664 from 780 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Going ahead to step 15:
If we divide 1160 by 166, we get 6 and a remainder of 164.
The number 6 becomes the next digit in our result. 
Result so far: 471702.1686746
Subtract 996 from 1160 to get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Let's proceed to step 16:
166 goes into 1640 9 times with a remainder of 146.
The number 9 becomes the next digit in our result. 
Result so far: 471702.16867469
The remainder is 146 after subtracting 1494 from 1640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

The final outcome is 471702.16867469, with a leftover of 1.46e-07.