so far my odoo9.0 goes quite well

but in Purchases>Reports>Purchase Analysis page, all numbers' Digits is 2

eg:

TOTAL price 22,000.00

Product Quantity: 200,000.00

Average Price: 0.11

how to revise the Digits ?

as this:

TOTAL price 22,000.000

Product Quantity: 200,000

Average Price: 0.110

i try to reset the Setting>Database Structure>Decimal Accuracy>*
but no working at all....

Thanks!