We divide 21572391 by 370
The aim is to understand the frequency of 370 in 21572391.

Advancing to step 1:
The number 370 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 370

Advancing to step 2:
The number 370 fits into 21 0 times, leaving a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 370

Going ahead to step 3:
370 can be fit into 215 0 times, resulting in a remainder of 215.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 215 and we're left with 215.
Grab the next digit (7) from the dividend, add it to 215, then carry on: 2157 / 370

Let's proceed to step 4:
370 goes into 2157 5 times with a remainder of 307.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 1850 from 2157 leaves us with 307.
Include the next digit (2) from the dividend after 307, then repeat: 3072 / 370

Moving on to step 5:
370 goes into 3072 8 times with a remainder of 112.
The next digit of our result is 8. 
Result so far: 58.0
Deduct 2960 from 3072 and we're left with 112.
Include the next digit (3) from the dividend after 112, then repeat: 1123 / 370

Moving on to step 6:
The number 370 fits into 1123 3 times, leaving a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 583.0
Subtract 1110 from 1123 to get 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 370

Moving on to step 7:
370 goes into 139 0 times with a remainder of 139.
Record the quotient 0 as the next digit in the result. 
Result so far: 5830.0
Subtracting 0 from 139 leaves us with 139.
Take the next digit (1) from the dividend and append it to 139, then repeat: 1391 / 370

Step 8:
370 goes into 1391 3 times with a remainder of 281.
Use 3 as the next digit of our solution. 
Result so far: 58303.0
The remainder is 281 after subtracting 1110 from 1391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

Moving on to step 9:
When dividing 2810 by 370, we get 7 with a remainder of 220.
Put 7 as the next digit of the answer. 
Result so far: 58303.7
Deduct 2590 from 2810 and we're left with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 10:
370 goes into 2200 5 times with a remainder of 350.
Put 5 as the next digit of the answer. 
Result so far: 58303.75
If we subtract 1850 from 2200, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 11:
The number 370 fits into 3500 9 times, leaving a remainder of 170.
The next digit of our result is 9. 
Result so far: 58303.759
The remainder is 170 after subtracting 3330 from 3500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 12:
370 goes into 1700 4 times with a remainder of 220.
Put 4 as the next digit of the answer. 
Result so far: 58303.7594
Subtracting 1480 from 1700 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 13:
2200 divided by 370 is 5 with a remainder of 350.
Write down 5 as next digit of the result. 
Result so far: 58303.75945
Subtract 1850 from 2200 to get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Let's proceed to step 14:
When dividing 3500 by 370, we get 9 with a remainder of 170.
The next digit of our result is 9. 
Result so far: 58303.759459
Subtracting 3330 from 3500 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 15:
If we divide 1700 by 370, we get 4 and a remainder of 220.
The number 4 becomes the next digit in our result. 
Result so far: 58303.7594594
If we subtract 1480 from 1700, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 16:
When dividing 2200 by 370, we get 5 with a remainder of 350.
Record the quotient 5 as the next digit in the result. 
Result so far: 58303.75945945
The remainder is 350 after subtracting 1850 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

The final result is 58303.75945945 with a remainder of 3.5e-07.