59082990 ÷ 420 
The aim is to understand the frequency of 420 in 59082990.

Going ahead to step 1:
When dividing 5 by 420, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 420

Let's proceed to step 2:
If we divide 59 by 420, we get 0 and a remainder of 59.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 59 after subtracting 0 from 59.
Bring next digit (0) of the dividend behind the 59 and repeat the process: 590 / 420

Let's proceed to step 3:
If we divide 590 by 420, we get 1 and a remainder of 170.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 420 from 590 to get 170.
Grab the next digit (8) from the dividend, add it to 170, then carry on: 1708 / 420

Going ahead to step 4:
420 goes into 1708 4 times with a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Subtracting 1680 from 1708 leaves us with 28.
Grab the next digit (2) from the dividend, add it to 28, then carry on: 282 / 420

Moving on to step 5:
If we divide 282 by 420, we get 0 and a remainder of 282.
Put 0 as the next digit of the answer. 
Result so far: 140.0
If we take 0 away from 282, we end up with 282.
Include the next digit (9) from the dividend after 282, then repeat: 2829 / 420

Advancing to step 6:
If we divide 2829 by 420, we get 6 and a remainder of 309.
Put 6 as the next digit of the answer. 
Result so far: 1406.0
If we subtract 2520 from 2829, we get 309.
Fetch the next digit (9) from the dividend, attach it to 309 and continue: 3099 / 420

On to step 7:
420 can be fit into 3099 7 times, resulting in a remainder of 159.
Put 7 as the next digit of the answer. 
Result so far: 14067.0
Subtract 2940 from 3099 to get 159.
Fetch the next digit (0) from the dividend, attach it to 159 and continue: 1590 / 420

Let's proceed to step 8:
The number 420 fits into 1590 3 times, leaving a remainder of 330.
Write down 3 as next digit of the result. 
Result so far: 140673.0
If we take 1260 away from 1590, we end up with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 9:
3300 divided by 420 is 7 with a remainder of 360.
Put 7 as the next digit of the answer. 
Result so far: 140673.7
Subtracting 2940 from 3300 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 10:
420 can be fit into 3600 8 times, resulting in a remainder of 240.
The next digit of our result is 8. 
Result so far: 140673.78
The remainder is 240 after subtracting 3360 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 11:
When dividing 2400 by 420, we get 5 with a remainder of 300.
The number 5 becomes the next digit in our result. 
Result so far: 140673.785
Deduct 2100 from 2400 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Going ahead to step 12:
If we divide 3000 by 420, we get 7 and a remainder of 60.
Put 7 as the next digit of the answer. 
Result so far: 140673.7857
If we subtract 2940 from 3000, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 13:
600 divided by 420 is 1 with a remainder of 180.
Use 1 as the next digit of our solution. 
Result so far: 140673.78571
If we subtract 420 from 600, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 14:
420 goes into 1800 4 times with a remainder of 120.
Use 4 as the next digit of our solution. 
Result so far: 140673.785714
If we take 1680 away from 1800, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 15:
The number 420 fits into 1200 2 times, leaving a remainder of 360.
The number 2 becomes the next digit in our result. 
Result so far: 140673.7857142
Subtract 840 from 1200 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 16:
3600 divided by 420 is 8 with a remainder of 240.
The next digit of our result is 8. 
Result so far: 140673.78571428
The remainder is 240 after subtracting 3360 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

After the division, we end up with 140673.78571428 and a remainder of 2.4e-07.