75399797 ÷ 42 
We want to figure out the number of times 75399797 can be divided by 42.

On to step 1:
The number 42 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 42

Step 2:
The number 42 fits into 75 1 times, leaving a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 42 from 75 and we're left with 33.
Bring next digit (3) of the dividend behind the 33 and repeat the process: 333 / 42

Moving on to step 3:
333 divided by 42 is 7 with a remainder of 39.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
The remainder is 39 after subtracting 294 from 333.
Grab the next digit (9) from the dividend, add it to 39, then carry on: 399 / 42

On to step 4:
399 divided by 42 is 9 with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 179.0
If we take 378 away from 399, we end up with 21.
Append the next digit (9) from the dividend to 21 and continue with: 219 / 42

Going ahead to step 5:
42 can be fit into 219 5 times, resulting in a remainder of 9.
The next digit of our result is 5. 
Result so far: 1795.0
Subtracting 210 from 219 leaves us with 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 42

Advancing to step 6:
42 goes into 97 2 times with a remainder of 13.
Record the quotient 2 as the next digit in the result. 
Result so far: 17952.0
Subtract 84 from 97 to get 13.
Fetch the next digit (9) from the dividend, attach it to 13 and continue: 139 / 42

Let's proceed to step 7:
The number 42 fits into 139 3 times, leaving a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 179523.0
If we subtract 126 from 139, we get 13.
Fetch the next digit (7) from the dividend, attach it to 13 and continue: 137 / 42

Going ahead to step 8:
The number 42 fits into 137 3 times, leaving a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 1795233.0
Deduct 126 from 137 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
When dividing 110 by 42, we get 2 with a remainder of 26.
Put 2 as the next digit of the answer. 
Result so far: 1795233.2
If we subtract 84 from 110, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 10:
If we divide 260 by 42, we get 6 and a remainder of 8.
The next digit of our result is 6. 
Result so far: 1795233.26
If we subtract 252 from 260, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 11:
80 divided by 42 is 1 with a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 1795233.261
Subtract 42 from 80 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 12:
The number 42 fits into 380 9 times, leaving a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 1795233.2619
If we take 378 away from 380, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
If we divide 20 by 42, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 1795233.2619
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 14:
42 goes into 200 4 times with a remainder of 32.
The next digit of our result is 4. 
Result so far: 1795233.261904
Deduct 168 from 200 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 15:
If we divide 320 by 42, we get 7 and a remainder of 26.
The next digit of our result is 7. 
Result so far: 1795233.2619047
The remainder is 26 after subtracting 294 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 16:
The number 42 fits into 260 6 times, leaving a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 1795233.26190476
The remainder is 8 after subtracting 252 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 1795233.26190476 with a remaining 8e-09.