We look at the division of 45157948 by 3 
We want to divide 45157948 by 3.

On to step 1:
3 can be fit into 4 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 3 away from 4, we end up with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 3

Advancing to step 2:
The number 3 fits into 15 5 times, leaving a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we subtract 15 from 15, we get 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 3

Advancing to step 3:
3 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 150.0
Subtract 0 from 1 to get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 3

Moving on to step 4:
3 goes into 15 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 1505.0
Subtracting 15 from 15 leaves us with 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 3

Step 5:
7 divided by 3 is 2 with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 15052.0
If we take 6 away from 7, we end up with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 3

On to step 6:
When dividing 19 by 3, we get 6 with a remainder of 1.
Record the quotient 6 as the next digit in the result. 
Result so far: 150526.0
Subtracting 18 from 19 leaves us with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 3

Step 7:
If we divide 14 by 3, we get 4 and a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 1505264.0
If we subtract 12 from 14, we get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 3

On to step 8:
3 can be fit into 28 9 times, resulting in a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 15052649.0
The remainder is 1 after subtracting 27 from 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 9:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 15052649.3
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 10:
10 divided by 3 is 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 15052649.33
Deduct 9 from 10 and we're left 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.

In conclusion, the division gives 15052649.33 with a balance of 0.001.