We look at the division of 73206527 by 420 
The aim is to understand the frequency of 420 in 73206527.

Let's proceed to step 1:
The number 420 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 420

On to step 2:
420 can be fit into 73 0 times, resulting in a remainder of 73.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 73, we end up with 73.
Fetch the next digit (2) from the dividend, attach it to 73 and continue: 732 / 420

Moving on to step 3:
The number 420 fits into 732 1 times, leaving a remainder of 312.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 312 after subtracting 420 from 732.
Take the next digit (0) from the dividend and append it to 312, then repeat: 3120 / 420

Going ahead to step 4:
The number 420 fits into 3120 7 times, leaving a remainder of 180.
Write down 7 as next digit of the result. 
Result so far: 17.0
Subtract 2940 from 3120 to get 180.
Fetch the next digit (6) from the dividend, attach it to 180 and continue: 1806 / 420

Moving on to step 5:
420 can be fit into 1806 4 times, resulting in a remainder of 126.
Use 4 as the next digit of our solution. 
Result so far: 174.0
If we subtract 1680 from 1806, we get 126.
Take the next digit (5) from the dividend and append it to 126, then repeat: 1265 / 420

Let's proceed to step 6:
420 can be fit into 1265 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 1743.0
Deduct 1260 from 1265 and we're left with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 420

Advancing to step 7:
When dividing 52 by 420, we get 0 with a remainder of 52.
Record the quotient 0 as the next digit in the result. 
Result so far: 17430.0
If we subtract 0 from 52, we get 52.
Fetch the next digit (7) from the dividend, attach it to 52 and continue: 527 / 420

Let's proceed to step 8:
When dividing 527 by 420, we get 1 with a remainder of 107.
Put 1 as the next digit of the answer. 
Result so far: 174301.0
The remainder is 107 after subtracting 420 from 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Going ahead to step 9:
1070 divided by 420 is 2 with a remainder of 230.
The next digit of our result is 2. 
Result so far: 174301.2
If we take 840 away from 1070, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 10:
The number 420 fits into 2300 5 times, leaving a remainder of 200.
Put 5 as the next digit of the answer. 
Result so far: 174301.25
If we subtract 2100 from 2300, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 11:
When dividing 2000 by 420, we get 4 with a remainder of 320.
Write down 4 as next digit of the result. 
Result so far: 174301.254
Subtract 1680 from 2000 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.

Moving on to step 12:
When dividing 3200 by 420, we get 7 with a remainder of 260.
The next digit of our result is 7. 
Result so far: 174301.2547
If we take 2940 away from 3200, we end up with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 13:
If we divide 2600 by 420, we get 6 and a remainder of 80.
Put 6 as the next digit of the answer. 
Result so far: 174301.25476
Deduct 2520 from 2600 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 14:
When dividing 800 by 420, we get 1 with a remainder of 380.
Put 1 as the next digit of the answer. 
Result so far: 174301.254761
If we take 420 away from 800, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 15:
When dividing 3800 by 420, we get 9 with a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 174301.2547619
Deduct 3780 from 3800 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 16:
420 goes into 200 0 times with a remainder of 200.
Put 0 as the next digit of the answer. 
Result so far: 174301.2547619
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final result is 174301.2547619 with a remainder of 2e-07.