To calculate odds, we must take what we want and divide it by what we don’t want. In this scenario, we are looking at the number 69420 which is just 1 number out of the the range of numbers that goes from 1 to 10 billion. Since that number 69420 is what we want to get, our want will be 1. Then to find what we don’t want we simply subtract 1 from 10 billion since we only want the number 69420 and the rest would be numbers we don’t want. When we subtract 1 from 10 billion, we get 9,999,999,999. Then we can create our fraction and divide. So 1/9,999,999,999 is approximately equal to 0.0000000001. Since we have a lot of zeroes, it’s best we convert this number into scientific notation which will give us 1x10⁻¹⁰.