87381942 ÷ 131 
The aim is to understand the frequency of 131 in 87381942.

Let's proceed to step 1:
131 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 131

Advancing to step 2:
131 can be fit into 87 0 times, resulting in a remainder of 87.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Append the next digit (3) from the dividend to 87 and continue with: 873 / 131

Let's proceed to step 3:
The number 131 fits into 873 6 times, leaving a remainder of 87.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 87 after subtracting 786 from 873.
Bring next digit (8) of the dividend behind the 87 and repeat the process: 878 / 131

Advancing to step 4:
The number 131 fits into 878 6 times, leaving a remainder of 92.
The next digit of our result is 6. 
Result so far: 66.0
If we subtract 786 from 878, we get 92.
Bring next digit (1) of the dividend behind the 92 and repeat the process: 921 / 131

Moving on to step 5:
When dividing 921 by 131, we get 7 with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 667.0
If we take 917 away from 921, we end up with 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 131

Going ahead to step 6:
If we divide 49 by 131, we get 0 and a remainder of 49.
Write down 0 as next digit of the result. 
Result so far: 6670.0
If we take 0 away from 49, we end up with 49.
Append the next digit (4) from the dividend to 49 and continue with: 494 / 131

Step 7:
If we divide 494 by 131, we get 3 and a remainder of 101.
The next digit of our result is 3. 
Result so far: 66703.0
Subtract 393 from 494 to get 101.
Take the next digit (2) from the dividend and append it to 101, then repeat: 1012 / 131

Moving on to step 8:
If we divide 1012 by 131, we get 7 and a remainder of 95.
The number 7 becomes the next digit in our result. 
Result so far: 667037.0
The remainder is 95 after subtracting 917 from 1012.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Advancing to step 9:
131 can be fit into 950 7 times, resulting in a remainder of 33.
Record the quotient 7 as the next digit in the result. 
Result so far: 667037.7
Subtract 917 from 950 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 10:
If we divide 330 by 131, we get 2 and a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 667037.72
Subtracting 262 from 330 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 11:
131 goes into 680 5 times with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 667037.725
Subtract 655 from 680 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 12:
When dividing 250 by 131, we get 1 with a remainder of 119.
The number 1 becomes the next digit in our result. 
Result so far: 667037.7251
If we subtract 131 from 250, we get 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Step 13:
When dividing 1190 by 131, we get 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 667037.72519
If we subtract 1179 from 1190, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 14:
131 goes into 110 0 times with a remainder of 110.
The number 0 becomes the next digit in our result. 
Result so far: 667037.72519
If we take 0 away from 110, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 15:
If we divide 1100 by 131, we get 8 and a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 667037.7251908
Deduct 1048 from 1100 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 16:
When dividing 520 by 131, we get 3 with a remainder of 127.
Use 3 as the next digit of our solution. 
Result so far: 667037.72519083
The remainder is 127 after subtracting 393 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

The final outcome is 667037.72519083, with a leftover of 1.27e-07.