Place value in whole numbers with commas as thousands separators

What is the value of each underlined digit?
Write your answer as in the example: 2 hundred thousands; 1 ten million; or 5 ones.

331,248,427 970,938,163 796,415,969 511,202,578
506,222,871 269,146,915 842,653,354 241,977,009
674,973,659 893,063,990 724,987,723 217,354,583
249,633,725 515,543,293 806,246,431 707,423,827
Correct
Incorrect