55742666 ÷ 642 
We want to divide 55742666 by 642.

Going ahead to step 1:
642 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 642

On to step 2:
If we divide 55 by 642, we get 0 and a remainder of 55.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 55, we end up with 55.
Bring next digit (7) of the dividend behind the 55 and repeat the process: 557 / 642

Let's proceed to step 3:
642 can be fit into 557 0 times, resulting in a remainder of 557.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 557 leaves us with 557.
Bring next digit (4) of the dividend behind the 557 and repeat the process: 5574 / 642

On to step 4:
642 can be fit into 5574 8 times, resulting in a remainder of 438.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 5136 from 5574 leaves us with 438.
Append the next digit (2) from the dividend to 438 and continue with: 4382 / 642

Step 5:
When dividing 4382 by 642, we get 6 with a remainder of 530.
The number 6 becomes the next digit in our result. 
Result so far: 86.0
Subtracting 3852 from 4382 leaves us with 530.
Append the next digit (6) from the dividend to 530 and continue with: 5306 / 642

Step 6:
642 goes into 5306 8 times with a remainder of 170.
Write down 8 as next digit of the result. 
Result so far: 868.0
If we subtract 5136 from 5306, we get 170.
Include the next digit (6) from the dividend after 170, then repeat: 1706 / 642

Moving on to step 7:
642 goes into 1706 2 times with a remainder of 422.
Put 2 as the next digit of the answer. 
Result so far: 8682.0
Subtracting 1284 from 1706 leaves us with 422.
Bring next digit (6) of the dividend behind the 422 and repeat the process: 4226 / 642

Step 8:
642 goes into 4226 6 times with a remainder of 374.
The number 6 becomes the next digit in our result. 
Result so far: 86826.0
If we take 3852 away from 4226, we end up with 374.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

On to step 9:
642 goes into 3740 5 times with a remainder of 530.
Put 5 as the next digit of the answer. 
Result so far: 86826.5
The remainder is 530 after subtracting 3210 from 3740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Moving on to step 10:
642 goes into 5300 8 times with a remainder of 164.
Use 8 as the next digit of our solution. 
Result so far: 86826.58
If we subtract 5136 from 5300, we get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Step 11:
1640 divided by 642 is 2 with a remainder of 356.
The number 2 becomes the next digit in our result. 
Result so far: 86826.582
Deduct 1284 from 1640 and we're left with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Advancing to step 12:
If we divide 3560 by 642, we get 5 and a remainder of 350.
Write down 5 as next digit of the result. 
Result so far: 86826.5825
Deduct 3210 from 3560 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Moving on to step 13:
If we divide 3500 by 642, we get 5 and a remainder of 290.
The number 5 becomes the next digit in our result. 
Result so far: 86826.58255
The remainder is 290 after subtracting 3210 from 3500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

The final outcome is 86826.58255, with a leftover of 0.00029.