Here is another question 9 hundreds+2000+1

0,1,2,9

2901 will be your answer

I thnk 9 hundreds is 900 so 900 + 2000 + 1  is 2000 + 900 = 2900 + 1 -= 2901  

Hope I helped =)

If by the ellipses you mean to say that the number 7 repeats forever after that point, then it is not irrational. Any number which can be expressed with repeating decimals is not irrational. For example, pi is an irrational number because it has no repeating decimals, but 0.33333333... is not irrational because it can be expressed by simply saying 0.3 repeated.