What is 1+1 i really forgot my answer was 11 bc there is 2 ones?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?

I’m really confused and need your assist me with this question i’ve never been taught