How many thousands in a biilion?

Help with math find the value of x and y in a rectangle when one of the long sides is 18 and the other long side is 5x plus 4y and one of the short sides is 6 and the other short side is 2x plus y? Who invented the caliper? What is 15 percent of 98.4? How many rotation symmetry does a right pentagonal prism have? Do special effects use a lot of math? How much liquid will fit in a box measuring 1 meter on each side? 8 x 8 x 16 cinder block weigh? What is 5.375 as a fraction? What is the meaning of around? What are the most common multiples of 10 and 9? What is the decimal of 7.5 percent? What is smallest 5-digit number without repetition? What is 6.2 divided by .8? How many deserts are there in Muslim world? What quantifier do you use in the word air? How many times is knowledge listed in the bible? What does forty percent equal in a decimal and a fraction? How do you write one hundred twenty-five thousand in words? How could you use the product of108 and 4 to find the product of 324 and 4? How many cubic inches are in 1800 cc?