53511945 ÷ 2 
The aim is to understand the frequency of 2 in 53511945.

Going ahead to step 1:
2 can be fit into 5 2 times, resulting in a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 4 from 5 to get 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 2

Let's proceed to step 2:
13 divided by 2 is 6 with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
Deduct 12 from 13 and we're left with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 2

Going ahead to step 3:
2 can be fit into 15 7 times, resulting in a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 267.0
Deduct 14 from 15 and we're left with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 2

Let's proceed to step 4:
When dividing 11 by 2, we get 5 with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 2675.0
If we subtract 10 from 11, we get 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 2

Let's proceed to step 5:
11 divided by 2 is 5 with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 26755.0
If we take 10 away from 11, we end up with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 2

On to step 6:
The number 2 fits into 19 9 times, leaving a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 267559.0
The remainder is 1 after subtracting 18 from 19.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 2

Going ahead to step 7:
The number 2 fits into 14 7 times, leaving a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 2675597.0
The remainder is 0 after subtracting 14 from 14.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 2

Step 8:
The number 2 fits into 5 2 times, leaving a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 26755972.0
If we take 4 away from 5, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 9:
10 divided by 2 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 26755972.5
The remainder is 0 after subtracting 10 from 10.
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 10:
2 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 26755972.5
If we subtract 0 from 0, 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.

Going ahead to step 11:
2 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 26755972.5
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.

The final result is 26755972.5 with a remainder of 0.0.