I believe he is referring to this part of the article:

>The spokesman downplayed the significance of the improper changes, which he said net out to $62.4 billion.

>At first glance adjustments totaling trillions may seem impossible. The amounts dwarf the Defense Department’s entire budget. Making changes to one account also require making changes to multiple levels of sub-accounts, however. That created a domino effect where, essentially, falsifications kept falling down the line. In many instances this daisy-chain was repeated multiple times for the same accounting item.

Basically 62 billion was effected, they claim trillions because of "write amplification" across multiple accounts.