We're dividing 43071531 by 901 
The aim is to understand the frequency of 901 in 43071531.

Going ahead to step 1:
901 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 901

On to step 2:
43 divided by 901 is 0 with a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Fetch the next digit (0) from the dividend, attach it to 43 and continue: 430 / 901

Step 3:
430 divided by 901 is 0 with a remainder of 430.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 430 to get 430.
Take the next digit (7) from the dividend and append it to 430, then repeat: 4307 / 901

Let's proceed to step 4:
When dividing 4307 by 901, we get 4 with a remainder of 703.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 3604 from 4307, we get 703.
Append the next digit (1) from the dividend to 703 and continue with: 7031 / 901

Step 5:
901 goes into 7031 7 times with a remainder of 724.
Write down 7 as next digit of the result. 
Result so far: 47.0
Subtracting 6307 from 7031 leaves us with 724.
Include the next digit (5) from the dividend after 724, then repeat: 7245 / 901

On to step 6:
If we divide 7245 by 901, we get 8 and a remainder of 37.
Use 8 as the next digit of our solution. 
Result so far: 478.0
Subtracting 7208 from 7245 leaves us with 37.
Fetch the next digit (3) from the dividend, attach it to 37 and continue: 373 / 901

Step 7:
The number 901 fits into 373 0 times, leaving a remainder of 373.
The next digit of our result is 0. 
Result so far: 4780.0
Subtracting 0 from 373 leaves us with 373.
Take the next digit (1) from the dividend and append it to 373, then repeat: 3731 / 901

Step 8:
901 can be fit into 3731 4 times, resulting in a remainder of 127.
Put 4 as the next digit of the answer. 
Result so far: 47804.0
Subtracting 3604 from 3731 leaves us with 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Advancing to step 9:
If we divide 1270 by 901, we get 1 and a remainder of 369.
Use 1 as the next digit of our solution. 
Result so far: 47804.1
If we take 901 away from 1270, we end up with 369.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3690, and continue the process.

Step 10:
3690 divided by 901 is 4 with a remainder of 86.
Put 4 as the next digit of the answer. 
Result so far: 47804.14
Subtract 3604 from 3690 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Going ahead to step 11:
When dividing 860 by 901, we get 0 with a remainder of 860.
Write down 0 as next digit of the result. 
Result so far: 47804.14
The remainder is 860 after subtracting 0 from 860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8600, and continue the process.

On to step 12:
901 goes into 8600 9 times with a remainder of 491.
Record the quotient 9 as the next digit in the result. 
Result so far: 47804.1409
If we take 8109 away from 8600, we end up with 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

On to step 13:
901 goes into 4910 5 times with a remainder of 405.
Record the quotient 5 as the next digit in the result. 
Result so far: 47804.14095
If we subtract 4505 from 4910, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Step 14:
901 goes into 4050 4 times with a remainder of 446.
Record the quotient 4 as the next digit in the result. 
Result so far: 47804.140954
Deduct 3604 from 4050 and we're left with 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Step 15:
901 can be fit into 4460 4 times, resulting in a remainder of 856.
Put 4 as the next digit of the answer. 
Result so far: 47804.1409544
If we subtract 3604 from 4460, we get 856.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8560, and continue the process.

The final result is 47804.1409544 with a remainder of 8.56e-06.