We look at the division of 84375438 by 642 
Let's see how many times 642 fits into 84375438.

Moving on to step 1:
642 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 642

Let's proceed to step 2:
642 can be fit into 84 0 times, resulting in a remainder of 84.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 84 and we're left with 84.
Grab the next digit (3) from the dividend, add it to 84, then carry on: 843 / 642

Going ahead to step 3:
642 goes into 843 1 times with a remainder of 201.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 642 from 843 to get 201.
Grab the next digit (7) from the dividend, add it to 201, then carry on: 2017 / 642

Going ahead to step 4:
If we divide 2017 by 642, we get 3 and a remainder of 91.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Subtracting 1926 from 2017 leaves us with 91.
Bring next digit (5) of the dividend behind the 91 and repeat the process: 915 / 642

Let's proceed to step 5:
642 can be fit into 915 1 times, resulting in a remainder of 273.
Use 1 as the next digit of our solution. 
Result so far: 131.0
Deduct 642 from 915 and we're left with 273.
Take the next digit (4) from the dividend and append it to 273, then repeat: 2734 / 642

Step 6:
642 can be fit into 2734 4 times, resulting in a remainder of 166.
Record the quotient 4 as the next digit in the result. 
Result so far: 1314.0
The remainder is 166 after subtracting 2568 from 2734.
Grab the next digit (3) from the dividend, add it to 166, then carry on: 1663 / 642

Step 7:
When dividing 1663 by 642, we get 2 with a remainder of 379.
Write down 2 as next digit of the result. 
Result so far: 13142.0
The remainder is 379 after subtracting 1284 from 1663.
Append the next digit (8) from the dividend to 379 and continue with: 3798 / 642

Moving on to step 8:
642 goes into 3798 5 times with a remainder of 588.
The next digit of our result is 5. 
Result so far: 131425.0
Subtract 3210 from 3798 to get 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

Going ahead to step 9:
When dividing 5880 by 642, we get 9 with a remainder of 102.
Use 9 as the next digit of our solution. 
Result so far: 131425.9
If we take 5778 away from 5880, we end up with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Step 10:
1020 divided by 642 is 1 with a remainder of 378.
Write down 1 as next digit of the result. 
Result so far: 131425.91
If we subtract 642 from 1020, we get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Step 11:
If we divide 3780 by 642, we get 5 and a remainder of 570.
Record the quotient 5 as the next digit in the result. 
Result so far: 131425.915
Subtract 3210 from 3780 to get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

On to step 12:
The number 642 fits into 5700 8 times, leaving a remainder of 564.
Record the quotient 8 as the next digit in the result. 
Result so far: 131425.9158
If we subtract 5136 from 5700, we get 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

On to step 13:
642 can be fit into 5640 8 times, resulting in a remainder of 504.
Write down 8 as next digit of the result. 
Result so far: 131425.91588
If we take 5136 away from 5640, we end up with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

The final outcome is 131425.91588, with a leftover of 0.000504.