Find the least number which must be added to 306452 to make it a perfect square.

Explanation

To find the least number that must be added to 306452 to make it a perfect square, we will follow these steps:

### Step 1: Estimate the Square Root
First, we need to estimate the square root of 306452. We can do this by finding the nearest perfect squares.

The perfect squares around 306452 are:
- \(550^2 = 302500\)
- \(560^2 = 313600\)
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