My useful Tools & Sites

https://planetcalc.com/8183 - list of words and numbers

   https://calculla.com/columnar_addition_calculator - other option

https://freecurrencyrates.com/en/#USD;ILS - currency with clac

http://he.symbolab.com/solver/series-calculator - best calculator

https://www.genyt.net - find youtube thumbnails
  https://ytimg.googleusercontent.com/vi/ln-rchcoR7g/mqdefault.jpg - small
  https://ytimg.googleusercontent.com/vi/ln-rchcoR7g/maxresdefault.jpg - full HD