We're dividing 42173324 by 989 
We want to figure out the number of times 42173324 can be divided by 989.

Moving on to step 1:
If we divide 4 by 989, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 989

On to step 2:
When dividing 42 by 989, we get 0 with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Take the next digit (1) from the dividend and append it to 42, then repeat: 421 / 989

Advancing to step 3:
When dividing 421 by 989, we get 0 with a remainder of 421.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 421, we get 421.
Include the next digit (7) from the dividend after 421, then repeat: 4217 / 989

Moving on to step 4:
When dividing 4217 by 989, we get 4 with a remainder of 261.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 3956 away from 4217, we end up with 261.
Grab the next digit (3) from the dividend, add it to 261, then carry on: 2613 / 989

Going ahead to step 5:
When dividing 2613 by 989, we get 2 with a remainder of 635.
Write down 2 as next digit of the result. 
Result so far: 42.0
If we subtract 1978 from 2613, we get 635.
Append the next digit (3) from the dividend to 635 and continue with: 6353 / 989

On to step 6:
When dividing 6353 by 989, we get 6 with a remainder of 419.
Put 6 as the next digit of the answer. 
Result so far: 426.0
Subtracting 5934 from 6353 leaves us with 419.
Fetch the next digit (2) from the dividend, attach it to 419 and continue: 4192 / 989

On to step 7:
989 can be fit into 4192 4 times, resulting in a remainder of 236.
Use 4 as the next digit of our solution. 
Result so far: 4264.0
If we subtract 3956 from 4192, we get 236.
Include the next digit (4) from the dividend after 236, then repeat: 2364 / 989

Moving on to step 8:
989 can be fit into 2364 2 times, resulting in a remainder of 386.
Write down 2 as next digit of the result. 
Result so far: 42642.0
If we take 1978 away from 2364, we end up with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Let's proceed to step 9:
When dividing 3860 by 989, we get 3 with a remainder of 893.
The number 3 becomes the next digit in our result. 
Result so far: 42642.3
Deduct 2967 from 3860 and we're left with 893.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8930, and continue the process.

Going ahead to step 10:
When dividing 8930 by 989, we get 9 with a remainder of 29.
The number 9 becomes the next digit in our result. 
Result so far: 42642.39
Subtracting 8901 from 8930 leaves us with 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 11:
290 divided by 989 is 0 with a remainder of 290.
The next digit of our result is 0. 
Result so far: 42642.39
If we subtract 0 from 290, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Let's proceed to step 12:
989 goes into 2900 2 times with a remainder of 922.
Record the quotient 2 as the next digit in the result. 
Result so far: 42642.3902
If we take 1978 away from 2900, we end up with 922.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9220, and continue the process.

Let's proceed to step 13:
When dividing 9220 by 989, we get 9 with a remainder of 319.
Write down 9 as next digit of the result. 
Result so far: 42642.39029
If we take 8901 away from 9220, we end up with 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Moving on to step 14:
The number 989 fits into 3190 3 times, leaving a remainder of 223.
Write down 3 as next digit of the result. 
Result so far: 42642.390293
Subtracting 2967 from 3190 leaves us with 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

On to step 15:
If we divide 2230 by 989, we get 2 and a remainder of 252.
Write down 2 as next digit of the result. 
Result so far: 42642.3902932
Subtracting 1978 from 2230 leaves us with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Going ahead to step 16:
When dividing 2520 by 989, we get 2 with a remainder of 542.
Record the quotient 2 as the next digit in the result. 
Result so far: 42642.39029322
If we take 1978 away from 2520, we end up with 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

The final result is 42642.39029322 with a remainder of 5.42e-07.