I need this number written in English form 421933593000000So

I need this number written in English form (421,933,593,000,000)

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Ans-

Astronomy is a fascinating science, from the distances to and inter-workings of stars and planets to the big questions like, “Where did it all come from?”, “What is ultimately going to happen?” and “Are we alone?”. Before we can begin to investigate these concepts we first have to master some basic mathematical skills that will allow us to talk about these astronomical concepts. Most of these skills are grade school level arithmetic skills, so you don’t have to be a mathematics major to understand the mathematical concepts necessary to do well in an introductory astronomy class. Honestly, you don’t even have to like math. What you do have to do is be willing to spend the time necessary to master these skills. In some cases you may already have the mastery. In others, it may just be a matter of a little practice to “knock the rust off”. Whatever the case, just like professors in other subjects can’t take time from class to remind you how to read or write, we won’t be spending any time in our astronomy class reviewing basic mathematical skills. Therefore this manual provides you a quick guide to the mathematical skills you will need and a basic set of practice exercises so you can check your level of mastery. Each section in this manual begins with a description of each set of skills. You should read these descriptions and if you fully understand the concepts, try some of the sample problems. If you score well, move on to the next section. However, if you find that you do need to rethink these concepts, then study the description carefully and do all of the exercises section. The questions in the exercises section go more in depth than multiple choice exam questions will, but doing them will help you think through and master the concepts. Answers for all of the exercise questions are provided in the last section. Only use these answers after you are done with the exercise questions (looking at the answers ahead of time will not help you learn). Finally, the last part of each section is example exam questions. These are the types of questions you can expect to find on multiple choice exams related to these skills.1,854,000 one million, eight hundred fifty-four thousand 12,130,000 twelve million, one hundred thirty thousand 2,064,600,000 two billion, sixty-four million, six hundred thousand 8,284,347,418,671 eight trillion, two-hundred eight-four billion, three hundred forty-seven million, four hundred eighteen thousand, six hundred seventy one