42459871 divided by 41 
The aim is to understand the frequency of 41 in 42459871.

On to step 1:
If we divide 4 by 41, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 41

Advancing to step 2:
41 can be fit into 42 1 times, resulting in a remainder of 1.
The next digit of our result is 1. 
Result so far: 1.0
If we take 41 away from 42, we end up with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 41

Step 3:
41 goes into 14 0 times with a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 14 and we're left with 14.
Bring next digit (5) of the dividend behind the 14 and repeat the process: 145 / 41

Advancing to step 4:
The number 41 fits into 145 3 times, leaving a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 103.0
If we take 123 away from 145, we end up with 22.
Fetch the next digit (9) from the dividend, attach it to 22 and continue: 229 / 41

Let's proceed to step 5:
If we divide 229 by 41, we get 5 and a remainder of 24.
The number 5 becomes the next digit in our result. 
Result so far: 1035.0
Deduct 205 from 229 and we're left with 24.
Bring next digit (8) of the dividend behind the 24 and repeat the process: 248 / 41

Advancing to step 6:
If we divide 248 by 41, we get 6 and a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 10356.0
If we take 246 away from 248, we end up with 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 41

Let's proceed to step 7:
The number 41 fits into 27 0 times, leaving a remainder of 27.
The next digit of our result is 0. 
Result so far: 103560.0
The remainder is 27 after subtracting 0 from 27.
Bring next digit (1) of the dividend behind the 27 and repeat the process: 271 / 41

Advancing to step 8:
271 divided by 41 is 6 with a remainder of 25.
Put 6 as the next digit of the answer. 
Result so far: 1035606.0
Subtract 246 from 271 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.

Advancing to step 9:
If we divide 250 by 41, we get 6 and a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 1035606.6
If we take 246 away from 250, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
The number 41 fits into 40 0 times, leaving a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 1035606.6
Deduct 0 from 40 and we're left with 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 11:
When dividing 400 by 41, we get 9 with a remainder of 31.
The number 9 becomes the next digit in our result. 
Result so far: 1035606.609
Subtracting 369 from 400 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 12:
If we divide 310 by 41, we get 7 and a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 1035606.6097
Subtract 287 from 310 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 13:
41 goes into 230 5 times with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 1035606.60975
Subtract 205 from 230 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 14:
When dividing 250 by 41, we get 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 1035606.609756
Subtracting 246 from 250 leaves us with 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 15:
40 divided by 41 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 1035606.609756
If we subtract 0 from 40, we 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.

Step 16:
41 can be fit into 400 9 times, resulting in a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 1035606.60975609
If we subtract 369 from 400, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

The final outcome is 1035606.60975609, with a leftover of 3.1e-08.