391660 ÷ 46 
We're looking to find how many times 46 goes into 391660.

Step 1:
If we divide 3 by 46, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 46

Moving on to step 2:
If we divide 39 by 46, we get 0 and a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Take the next digit (1) from the dividend and append it to 39, then repeat: 391 / 46

Moving on to step 3:
46 can be fit into 391 8 times, resulting in a remainder of 23.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 368 from 391 leaves us with 23.
Take the next digit (6) from the dividend and append it to 23, then repeat: 236 / 46

On to step 4:
46 goes into 236 5 times with a remainder of 6.
The next digit of our result is 5. 
Result so far: 85.0
Subtract 230 from 236 to get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 46

Advancing to step 5:
46 can be fit into 66 1 times, resulting in a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 851.0
Deduct 46 from 66 and we're left with 20.
Fetch the next digit (0) from the dividend, attach it to 20 and continue: 200 / 46

Moving on to step 6:
200 divided by 46 is 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 8514.0
Deduct 184 from 200 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 7:
46 goes into 160 3 times with a remainder of 22.
Record the quotient 3 as the next digit in the result. 
Result so far: 8514.3
The remainder is 22 after subtracting 138 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 8:
If we divide 220 by 46, we get 4 and a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 8514.34
If we subtract 184 from 220, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 9:
360 divided by 46 is 7 with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 8514.347
Subtracting 322 from 360 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 10:
The number 46 fits into 380 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 8514.3478
If we subtract 368 from 380, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 11:
120 divided by 46 is 2 with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 8514.34782
Subtracting 92 from 120 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 12:
If we divide 280 by 46, we get 6 and a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 8514.347826
The remainder is 4 after subtracting 276 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 13:
The number 46 fits into 40 0 times, leaving a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 8514.347826
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 14:
46 can be fit into 400 8 times, resulting in a remainder of 32.
The next digit of our result is 8. 
Result so far: 8514.34782608
Subtracting 368 from 400 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final outcome is 8514.34782608, with a leftover of 3.2e-08.