49220121 divided by 402 
The aim is to understand the frequency of 402 in 49220121.

Step 1:
402 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 402

Moving on to step 2:
If we divide 49 by 402, we get 0 and a remainder of 49.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 49, we end up with 49.
Bring next digit (2) of the dividend behind the 49 and repeat the process: 492 / 402

Advancing to step 3:
If we divide 492 by 402, we get 1 and a remainder of 90.
The next digit of our result is 1. 
Result so far: 1.0
If we take 402 away from 492, we end up with 90.
Fetch the next digit (2) from the dividend, attach it to 90 and continue: 902 / 402

Let's proceed to step 4:
If we divide 902 by 402, we get 2 and a remainder of 98.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtract 804 from 902 to get 98.
Take the next digit (0) from the dividend and append it to 98, then repeat: 980 / 402

On to step 5:
The number 402 fits into 980 2 times, leaving a remainder of 176.
The number 2 becomes the next digit in our result. 
Result so far: 122.0
The remainder is 176 after subtracting 804 from 980.
Include the next digit (1) from the dividend after 176, then repeat: 1761 / 402

Let's proceed to step 6:
If we divide 1761 by 402, we get 4 and a remainder of 153.
Write down 4 as next digit of the result. 
Result so far: 1224.0
Subtracting 1608 from 1761 leaves us with 153.
Take the next digit (2) from the dividend and append it to 153, then repeat: 1532 / 402

On to step 7:
When dividing 1532 by 402, we get 3 with a remainder of 326.
Put 3 as the next digit of the answer. 
Result so far: 12243.0
If we take 1206 away from 1532, we end up with 326.
Append the next digit (1) from the dividend to 326 and continue with: 3261 / 402

On to step 8:
If we divide 3261 by 402, we get 8 and a remainder of 45.
The number 8 becomes the next digit in our result. 
Result so far: 122438.0
Subtracting 3216 from 3261 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 9:
When dividing 450 by 402, we get 1 with a remainder of 48.
The number 1 becomes the next digit in our result. 
Result so far: 122438.1
Subtracting 402 from 450 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 10:
402 can be fit into 480 1 times, resulting in a remainder of 78.
Use 1 as the next digit of our solution. 
Result so far: 122438.11
The remainder is 78 after subtracting 402 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

The final outcome is 122438.11, with a leftover of 0.078.