Given two dates, calculate the number of days in between them.
From: 4th April 2020 
To: 15th April 2020
There are 11 days between 4th April 2020 and 15th April 2020.
Complete the following task based on the instruction and optional input provided.### Instruction:
Given two dates, calculate the number of days in between them.

### Input:
From: 4th April 2020 
To: 15th April 2020

### Output:
There are 11 days between 4th April 2020 and 15th April 2020.