Nonsense

The total number can be broken down to 6 * 1,000,000 + 6 * 100,000 + 6 * 10,000 + 6 * 1,000 + 6 * 100 + 6 * 10 + 6 * 1.

So you could think of it as a number with 6 millions, 6 hundred thousands, 6 ten thousands, 6 thousands, 6 hundreds, 6 tens, and 6 ones.

They just wanted any 7-digit number with 6 ‘ten thousands’ in it, eg: 1,060,000.

Putting a six in all of the positions fulfilled the question’s requirements without actually proving whether or not they understood the question.