We're dividing 42366590 by 170 
We want to figure out the number of times 42366590 can be divided by 170.

Let's proceed to step 1:
If we divide 4 by 170, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 170

Going ahead to step 2:
When dividing 42 by 170, we get 0 with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Grab the next digit (3) from the dividend, add it to 42, then carry on: 423 / 170

Going ahead to step 3:
When dividing 423 by 170, we get 2 with a remainder of 83.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 340 away from 423, we end up with 83.
Include the next digit (6) from the dividend after 83, then repeat: 836 / 170

Advancing to step 4:
170 goes into 836 4 times with a remainder of 156.
Write down 4 as next digit of the result. 
Result so far: 24.0
Subtract 680 from 836 to get 156.
Append the next digit (6) from the dividend to 156 and continue with: 1566 / 170

Moving on to step 5:
170 goes into 1566 9 times with a remainder of 36.
The number 9 becomes the next digit in our result. 
Result so far: 249.0
Subtract 1530 from 1566 to get 36.
Include the next digit (5) from the dividend after 36, then repeat: 365 / 170

Advancing to step 6:
If we divide 365 by 170, we get 2 and a remainder of 25.
The next digit of our result is 2. 
Result so far: 2492.0
Subtracting 340 from 365 leaves us with 25.
Bring next digit (9) of the dividend behind the 25 and repeat the process: 259 / 170

Let's proceed to step 7:
259 divided by 170 is 1 with a remainder of 89.
The next digit of our result is 1. 
Result so far: 24921.0
Deduct 170 from 259 and we're left with 89.
Bring next digit (0) of the dividend behind the 89 and repeat the process: 890 / 170

On to step 8:
170 goes into 890 5 times with a remainder of 40.
Use 5 as the next digit of our solution. 
Result so far: 249215.0
The remainder is 40 after subtracting 850 from 890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
When dividing 400 by 170, we get 2 with a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 249215.2
Deduct 340 from 400 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 10:
When dividing 600 by 170, we get 3 with a remainder of 90.
Record the quotient 3 as the next digit in the result. 
Result so far: 249215.23
The remainder is 90 after subtracting 510 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 11:
When dividing 900 by 170, we get 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 249215.235
If we subtract 850 from 900, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 12:
500 divided by 170 is 2 with a remainder of 160.
Put 2 as the next digit of the answer. 
Result so far: 249215.2352
The remainder is 160 after subtracting 340 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 13:
170 goes into 1600 9 times with a remainder of 70.
Write down 9 as next digit of the result. 
Result so far: 249215.23529
If we subtract 1530 from 1600, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 14:
If we divide 700 by 170, we get 4 and a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 249215.235294
Subtracting 680 from 700 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 15:
170 can be fit into 200 1 times, resulting in a remainder of 30.
Write down 1 as next digit of the result. 
Result so far: 249215.2352941
The remainder is 30 after subtracting 170 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 16:
If we divide 300 by 170, we get 1 and a remainder of 130.
Use 1 as the next digit of our solution. 
Result so far: 249215.23529411
If we subtract 170 from 300, we get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

The quotient of the division is 249215.23529411, and the remainder is 1.3e-07.