On my phone it seemed to ignore any decimal points. Might have been just me, as I was trying to enter it in a hurry (I had someone behind me waiting).
But still it would make more sense to interpret 759 as 0.759 rather than 7.590.
Too bad I can't try to alter it afterwards, as you can only enter it while at the gas station. Would be good to have an option to enter prices for a gas station you have just been to, since you can find it on the receipt.