642889 ÷ 48 
We're looking to find how many times 48 goes into 642889.

Advancing to step 1:
The number 48 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 48

Going ahead to step 2:
If we divide 64 by 48, we get 1 and a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 48 from 64 and we're left with 16.
Include the next digit (2) from the dividend after 16, then repeat: 162 / 48

Advancing to step 3:
48 goes into 162 3 times with a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtracting 144 from 162 leaves us with 18.
Grab the next digit (8) from the dividend, add it to 18, then carry on: 188 / 48

On to step 4:
The number 48 fits into 188 3 times, leaving a remainder of 44.
The number 3 becomes the next digit in our result. 
Result so far: 133.0
Subtracting 144 from 188 leaves us with 44.
Take the next digit (8) from the dividend and append it to 44, then repeat: 448 / 48

Advancing to step 5:
48 goes into 448 9 times with a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 1339.0
Subtracting 432 from 448 leaves us with 16.
Append the next digit (9) from the dividend to 16 and continue with: 169 / 48

On to step 6:
169 divided by 48 is 3 with a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 13393.0
Subtracting 144 from 169 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 7:
48 can be fit into 250 5 times, resulting in a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 13393.5
Subtract 240 from 250 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
100 divided by 48 is 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 13393.52
If we take 96 away from 100, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
48 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 13393.52
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 10:
If we divide 400 by 48, we get 8 and a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 13393.5208
Subtracting 384 from 400 leaves us 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.

On to step 11:
If we divide 160 by 48, we get 3 and a remainder of 16.
The next digit of our result is 3. 
Result so far: 13393.52083
The remainder is 16 after subtracting 144 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
The number 48 fits into 160 3 times, leaving a remainder of 16.
Put 3 as the next digit of the answer. 
Result so far: 13393.520833
The remainder is 16 after subtracting 144 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 13393.520833, with a leftover of 1.6e-06.