Hi, here's your problem today. This problem was recently asked by Microsoft:

You are given an array of integers. Return the largest product that can be made by multiplying any 3 integers in the array.

Example:
`[-4, -4, 2, 8]`

should return 128 as the largest product can be made by multiplying -4 * -4 * 8 = 128.

Here's a starting point:

```
def maximum_product_of_three(lst):
# Fill this in.
print maximum_product_of_three([-4, -4, 2, 8])
# 128
```