We're dividing 56889693 by 420 
The aim is to understand the frequency of 420 in 56889693.

On to step 1:
When dividing 5 by 420, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (6) from the dividend, add it to 5, then carry on: 56 / 420

Step 2:
420 goes into 56 0 times with a remainder of 56.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 56, we end up with 56.
Take the next digit (8) from the dividend and append it to 56, then repeat: 568 / 420

On to step 3:
The number 420 fits into 568 1 times, leaving a remainder of 148.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 420 from 568, we get 148.
Bring next digit (8) of the dividend behind the 148 and repeat the process: 1488 / 420

Advancing to step 4:
1488 divided by 420 is 3 with a remainder of 228.
Write down 3 as next digit of the result. 
Result so far: 13.0
Deduct 1260 from 1488 and we're left with 228.
Bring next digit (9) of the dividend behind the 228 and repeat the process: 2289 / 420

On to step 5:
The number 420 fits into 2289 5 times, leaving a remainder of 189.
Put 5 as the next digit of the answer. 
Result so far: 135.0
The remainder is 189 after subtracting 2100 from 2289.
Take the next digit (6) from the dividend and append it to 189, then repeat: 1896 / 420

Going ahead to step 6:
420 can be fit into 1896 4 times, resulting in a remainder of 216.
Put 4 as the next digit of the answer. 
Result so far: 1354.0
Deduct 1680 from 1896 and we're left with 216.
Fetch the next digit (9) from the dividend, attach it to 216 and continue: 2169 / 420

Step 7:
When dividing 2169 by 420, we get 5 with a remainder of 69.
The next digit of our result is 5. 
Result so far: 13545.0
If we subtract 2100 from 2169, we get 69.
Include the next digit (3) from the dividend after 69, then repeat: 693 / 420

Going ahead to step 8:
When dividing 693 by 420, we get 1 with a remainder of 273.
Put 1 as the next digit of the answer. 
Result so far: 135451.0
Deduct 420 from 693 and we're left with 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Moving on to step 9:
If we divide 2730 by 420, we get 6 and a remainder of 210.
Use 6 as the next digit of our solution. 
Result so far: 135451.6
Subtracting 2520 from 2730 leaves us with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 10:
If we divide 2100 by 420, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 135451.65
If we subtract 2100 from 2100, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
The number 420 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 135451.65
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 12:
420 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 135451.65
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 135451.65, with a leftover of 0.0.