Round up

I need people good in math to help me with this difficult rounding up.
$ 1.607 to $ 1.61 sound reasonable?
How about $ 1.607 to $ 1.7 does not make much difference?
And this $ 1.606 billion to $ 1.7 billion.
Rounding up figure of just $ 0.93 billion. Still sound reasonable?
Well read it another way, $ 93 million.
And another way $ 93 000 thousand.
Let just read da figures only $ 93 000 000.

Our beloved PM just said it's a mistake and lets us forget about it.
He added "We will decide later on to negotiate for the purchase of the helicopter -- when we feel it is time to do that and we feel we have money to do that -- we see what the price will be"
What is he trying to inform us? He wanna to show everyone the nicer "round up" price?

Our beloved DPM also said opposition is making too much issue out of it.

Well, read all about it the best rounding up figure on earth.