(a) 821,045 - eight hundred twenty-one thousand, forty-five
(b) 60,238 - sixty thousand, two hundred thirty-eight
(c) 7,006,231 - seven million, six thousand, two hundred thirty-one
(d) 3,030,000 - three million, thirty thousand
(e) 6,432,007 - six million, four hundred thirty-two thousand, seven
(f) 1,602,000 - one million, six hundred two thousand