Как на английском языке написать полностью цифры 12,756.3 km, 4.5-4.6 billion, 509,600,000 km2, 71%(land 29%), 149,573,000 km? Заранее спасибо.

twelve thousand seven hundred fifty six point three kilometers four point five - four point six billion five hundred and nine million six hundred thousand square kilometers seventy one percent (land twenty nine percent) one hundred forty nine million five hundred seventy three thousand kilometers