We divide 42139572 by 531
We're looking to find how many times 531 goes into 42139572.

Moving on to step 1:
The number 531 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 531

Going ahead to step 2:
When dividing 42 by 531, we get 0 with a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 531

Step 3:
The number 531 fits into 421 0 times, leaving a remainder of 421.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 421 after subtracting 0 from 421.
Take the next digit (3) from the dividend and append it to 421, then repeat: 4213 / 531

Going ahead to step 4:
4213 divided by 531 is 7 with a remainder of 496.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtracting 3717 from 4213 leaves us with 496.
Take the next digit (9) from the dividend and append it to 496, then repeat: 4969 / 531

Advancing to step 5:
4969 divided by 531 is 9 with a remainder of 190.
Put 9 as the next digit of the answer. 
Result so far: 79.0
Deduct 4779 from 4969 and we're left with 190.
Include the next digit (5) from the dividend after 190, then repeat: 1905 / 531

Moving on to step 6:
531 goes into 1905 3 times with a remainder of 312.
Use 3 as the next digit of our solution. 
Result so far: 793.0
If we take 1593 away from 1905, we end up with 312.
Grab the next digit (7) from the dividend, add it to 312, then carry on: 3127 / 531

Step 7:
531 goes into 3127 5 times with a remainder of 472.
Write down 5 as next digit of the result. 
Result so far: 7935.0
Subtract 2655 from 3127 to get 472.
Append the next digit (2) from the dividend to 472 and continue with: 4722 / 531

Let's proceed to step 8:
4722 divided by 531 is 8 with a remainder of 474.
The number 8 becomes the next digit in our result. 
Result so far: 79358.0
If we subtract 4248 from 4722, we get 474.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4740, and continue the process.

Step 9:
531 can be fit into 4740 8 times, resulting in a remainder of 492.
Write down 8 as next digit of the result. 
Result so far: 79358.8
Subtracting 4248 from 4740 leaves us with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Going ahead to step 10:
531 goes into 4920 9 times with a remainder of 141.
Use 9 as the next digit of our solution. 
Result so far: 79358.89
Subtract 4779 from 4920 to get 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Let's proceed to step 11:
The number 531 fits into 1410 2 times, leaving a remainder of 348.
The next digit of our result is 2. 
Result so far: 79358.892
Subtract 1062 from 1410 to get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Moving on to step 12:
When dividing 3480 by 531, we get 6 with a remainder of 294.
Use 6 as the next digit of our solution. 
Result so far: 79358.8926
Subtract 3186 from 3480 to get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Step 13:
If we divide 2940 by 531, we get 5 and a remainder of 285.
Record the quotient 5 as the next digit in the result. 
Result so far: 79358.89265
Subtract 2655 from 2940 to get 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Moving on to step 14:
531 goes into 2850 5 times with a remainder of 195.
Write down 5 as next digit of the result. 
Result so far: 79358.892655
Subtracting 2655 from 2850 leaves us with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

After the division, we end up with 79358.892655 and a remainder of 1.95e-05.