42435545 ÷ 321 
Let's see how many times 321 fits into 42435545.

On to step 1:
321 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
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 / 321

Let's proceed to step 2:
42 divided by 321 is 0 with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Grab the next digit (4) from the dividend, add it to 42, then carry on: 424 / 321

Moving on to step 3:
321 goes into 424 1 times with a remainder of 103.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 321 from 424 leaves us with 103.
Grab the next digit (3) from the dividend, add it to 103, then carry on: 1033 / 321

Step 4:
If we divide 1033 by 321, we get 3 and a remainder of 70.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we take 963 away from 1033, we end up with 70.
Take the next digit (5) from the dividend and append it to 70, then repeat: 705 / 321

Let's proceed to step 5:
The number 321 fits into 705 2 times, leaving a remainder of 63.
The next digit of our result is 2. 
Result so far: 132.0
The remainder is 63 after subtracting 642 from 705.
Take the next digit (5) from the dividend and append it to 63, then repeat: 635 / 321

Let's proceed to step 6:
The number 321 fits into 635 1 times, leaving a remainder of 314.
Write down 1 as next digit of the result. 
Result so far: 1321.0
Subtracting 321 from 635 leaves us with 314.
Grab the next digit (4) from the dividend, add it to 314, then carry on: 3144 / 321

Let's proceed to step 7:
321 can be fit into 3144 9 times, resulting in a remainder of 255.
Write down 9 as next digit of the result. 
Result so far: 13219.0
Deduct 2889 from 3144 and we're left with 255.
Bring next digit (5) of the dividend behind the 255 and repeat the process: 2555 / 321

Going ahead to step 8:
When dividing 2555 by 321, we get 7 with a remainder of 308.
Put 7 as the next digit of the answer. 
Result so far: 132197.0
Subtracting 2247 from 2555 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Going ahead to step 9:
3080 divided by 321 is 9 with a remainder of 191.
Record the quotient 9 as the next digit in the result. 
Result so far: 132197.9
The remainder is 191 after subtracting 2889 from 3080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Going ahead to step 10:
1910 divided by 321 is 5 with a remainder of 305.
The next digit of our result is 5. 
Result so far: 132197.95
Subtract 1605 from 1910 to get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Advancing to step 11:
321 can be fit into 3050 9 times, resulting in a remainder of 161.
Put 9 as the next digit of the answer. 
Result so far: 132197.959
The remainder is 161 after subtracting 2889 from 3050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Advancing to step 12:
If we divide 1610 by 321, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 132197.9595
Subtracting 1605 from 1610 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 13:
When dividing 50 by 321, we get 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 132197.9595
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 14:
The number 321 fits into 500 1 times, leaving a remainder of 179.
Write down 1 as next digit of the result. 
Result so far: 132197.959501
If we take 321 away from 500, we end up with 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Going ahead to step 15:
If we divide 1790 by 321, we get 5 and a remainder of 185.
The next digit of our result is 5. 
Result so far: 132197.9595015
Subtracting 1605 from 1790 leaves us with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Let's proceed to step 16:
When dividing 1850 by 321, we get 5 with a remainder of 245.
Write down 5 as next digit of the result. 
Result so far: 132197.95950155
If we take 1605 away from 1850, we end up with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

In conclusion, the division gives 132197.95950155 with a balance of 2.45e-07.