55545859 ÷ 42 
We want to figure out the number of times 55545859 can be divided by 42.

On to step 1:
When dividing 5 by 42, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 42

On to step 2:
If we divide 55 by 42, we get 1 and a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 42 from 55 to get 13.
Bring next digit (5) of the dividend behind the 13 and repeat the process: 135 / 42

Moving on to step 3:
When dividing 135 by 42, we get 3 with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtract 126 from 135 to get 9.
Take the next digit (4) from the dividend and append it to 9, then repeat: 94 / 42

Let's proceed to step 4:
42 can be fit into 94 2 times, resulting in a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 132.0
Subtracting 84 from 94 leaves us with 10.
Append the next digit (5) from the dividend to 10 and continue with: 105 / 42

Let's proceed to step 5:
When dividing 105 by 42, we get 2 with a remainder of 21.
Record the quotient 2 as the next digit in the result. 
Result so far: 1322.0
If we take 84 away from 105, we end up with 21.
Include the next digit (8) from the dividend after 21, then repeat: 218 / 42

On to step 6:
42 goes into 218 5 times with a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 13225.0
Deduct 210 from 218 and we're left with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 42

Step 7:
The number 42 fits into 85 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 132252.0
Subtracting 84 from 85 leaves us with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 42

Step 8:
When dividing 19 by 42, we get 0 with a remainder of 19.
The next digit of our result is 0. 
Result so far: 1322520.0
The remainder is 19 after subtracting 0 from 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 9:
When dividing 190 by 42, we get 4 with a remainder of 22.
The number 4 becomes the next digit in our result. 
Result so far: 1322520.4
If we subtract 168 from 190, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 10:
220 divided by 42 is 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 1322520.45
Subtract 210 from 220 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 11:
100 divided by 42 is 2 with a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 1322520.452
The remainder is 16 after subtracting 84 from 100.
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 12:
42 goes into 160 3 times with a remainder of 34.
The number 3 becomes the next digit in our result. 
Result so far: 1322520.4523
Subtracting 126 from 160 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 13:
When dividing 340 by 42, we get 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 1322520.45238
Subtract 336 from 340 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 14:
If we divide 40 by 42, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 1322520.45238
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 15:
400 divided by 42 is 9 with a remainder of 22.
Use 9 as the next digit of our solution. 
Result so far: 1322520.4523809
If we subtract 378 from 400, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 16:
If we divide 220 by 42, we get 5 and a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 1322520.45238095
Deduct 210 from 220 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 1322520.45238095 with a remaining 1e-08.