Let's divide 60509333 by 645
The aim is to understand the frequency of 645 in 60509333.

Moving on to step 1:
645 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 645

Moving on to step 2:
The number 645 fits into 60 0 times, leaving a remainder of 60.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 60 and we're left with 60.
Include the next digit (5) from the dividend after 60, then repeat: 605 / 645

Moving on to step 3:
645 can be fit into 605 0 times, resulting in a remainder of 605.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 605, we end up with 605.
Grab the next digit (0) from the dividend, add it to 605, then carry on: 6050 / 645

Advancing to step 4:
645 goes into 6050 9 times with a remainder of 245.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 245 after subtracting 5805 from 6050.
Append the next digit (9) from the dividend to 245 and continue with: 2459 / 645

On to step 5:
645 goes into 2459 3 times with a remainder of 524.
Write down 3 as next digit of the result. 
Result so far: 93.0
Subtract 1935 from 2459 to get 524.
Grab the next digit (3) from the dividend, add it to 524, then carry on: 5243 / 645

Let's proceed to step 6:
The number 645 fits into 5243 8 times, leaving a remainder of 83.
The number 8 becomes the next digit in our result. 
Result so far: 938.0
Subtract 5160 from 5243 to get 83.
Bring next digit (3) of the dividend behind the 83 and repeat the process: 833 / 645

Advancing to step 7:
645 can be fit into 833 1 times, resulting in a remainder of 188.
The next digit of our result is 1. 
Result so far: 9381.0
The remainder is 188 after subtracting 645 from 833.
Bring next digit (3) of the dividend behind the 188 and repeat the process: 1883 / 645

Advancing to step 8:
1883 divided by 645 is 2 with a remainder of 593.
Record the quotient 2 as the next digit in the result. 
Result so far: 93812.0
If we take 1290 away from 1883, we end up with 593.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5930, and continue the process.

Let's proceed to step 9:
645 goes into 5930 9 times with a remainder of 125.
The next digit of our result is 9. 
Result so far: 93812.9
Subtract 5805 from 5930 to get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Advancing to step 10:
If we divide 1250 by 645, we get 1 and a remainder of 605.
The number 1 becomes the next digit in our result. 
Result so far: 93812.91
Subtract 645 from 1250 to get 605.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6050, and continue the process.

Going ahead to step 11:
645 goes into 6050 9 times with a remainder of 245.
Use 9 as the next digit of our solution. 
Result so far: 93812.919
The remainder is 245 after subtracting 5805 from 6050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Moving on to step 12:
If we divide 2450 by 645, we get 3 and a remainder of 515.
Write down 3 as next digit of the result. 
Result so far: 93812.9193
Deduct 1935 from 2450 and we're left with 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Step 13:
645 goes into 5150 7 times with a remainder of 635.
Record the quotient 7 as the next digit in the result. 
Result so far: 93812.91937
If we subtract 4515 from 5150, we get 635.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Going ahead to step 14:
645 can be fit into 6350 9 times, resulting in a remainder of 545.
Record the quotient 9 as the next digit in the result. 
Result so far: 93812.919379
Subtracting 5805 from 6350 leaves us with 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5450, and continue the process.

Advancing to step 15:
If we divide 5450 by 645, we get 8 and a remainder of 290.
Write down 8 as next digit of the result. 
Result so far: 93812.9193798
Subtract 5160 from 5450 to get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 16:
645 goes into 2900 4 times with a remainder of 320.
The next digit of our result is 4. 
Result so far: 93812.91937984
Subtract 2580 from 2900 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

The quotient of the division is 93812.91937984, and the remainder is 3.2e-07.