To work this out you would first divide 1.3 by 100, which gives you 0.013. Then you would add 0.013 to 1, which gives you 1.013. This is because you are finding a percentage increase and so you would convert the percentage to a decimal and add it to 1. Then you would multiply 5949951 by 1.013 to the power of 10. This is because you are finding the percentage increase over a span of 10 years.
6 x 10^-3 because the decimal point is 3 place value units away from the 6, and scientific notation is a x 10^n, where n can be a positive of a negative depending on the number