170378 ÷ 43 
We want to figure out the number of times 170378 can be divided by 43.

On to step 1:
If we divide 1 by 43, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 43

Advancing to step 2:
43 goes into 17 0 times with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Grab the next digit (0) from the dividend, add it to 17, then carry on: 170 / 43

Step 3:
170 divided by 43 is 3 with a remainder of 41.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 129 away from 170, we end up with 41.
Include the next digit (3) from the dividend after 41, then repeat: 413 / 43

Going ahead to step 4:
When dividing 413 by 43, we get 9 with a remainder of 26.
Use 9 as the next digit of our solution. 
Result so far: 39.0
If we take 387 away from 413, we end up with 26.
Fetch the next digit (7) from the dividend, attach it to 26 and continue: 267 / 43

Step 5:
43 goes into 267 6 times with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 396.0
Subtracting 258 from 267 leaves us with 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 43

Step 6:
If we divide 98 by 43, we get 2 and a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 3962.0
The remainder is 12 after subtracting 86 from 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 7:
120 divided by 43 is 2 with a remainder of 34.
Write down 2 as next digit of the result. 
Result so far: 3962.2
Deduct 86 from 120 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 8:
43 can be fit into 340 7 times, resulting in a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 3962.27
If we subtract 301 from 340, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 9:
If we divide 390 by 43, we get 9 and a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 3962.279
Deduct 387 from 390 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 10:
43 can be fit into 30 0 times, resulting in a remainder of 30.
The next digit of our result is 0. 
Result so far: 3962.279
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 11:
43 goes into 300 6 times with a remainder of 42.
The next digit of our result is 6. 
Result so far: 3962.27906
The remainder is 42 after subtracting 258 from 300.
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 12:
420 divided by 43 is 9 with a remainder of 33.
Put 9 as the next digit of the answer. 
Result so far: 3962.279069
The remainder is 33 after subtracting 387 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Going ahead to step 13:
When dividing 330 by 43, we get 7 with a remainder of 29.
The number 7 becomes the next digit in our result. 
Result so far: 3962.2790697
Subtract 301 from 330 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 14:
290 divided by 43 is 6 with a remainder of 32.
Put 6 as the next digit of the answer. 
Result so far: 3962.27906976
Subtracting 258 from 290 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 3962.27906976, with a leftover of 3.2e-08.