Deflation
Exchange rate considering the 45 cents is another country's currency and the dollar is referring to say the US dollar.
Inflation
45 cents 1 nickel is 5 cents 9 x 5 = 45
In all countries that use dollars and cents as their currency, $1 = 100 cents, so 45¢ = 45/100 of a dollar, or 45%.
It means: "...compared to the value it had a certain number of years ago". So back then you could buy an item for 45 cents that you now would have to pay a dollar for.
$1 = 100 cents → 45 cents/$1 = 45 cents/100 cents = 45/100 = 9/20
45 cents
The 1943 steel cents are worth about 10 cents in circulated condition, or upwards of a dollar if it still has the original zinc coating. Then the '44 and '45 pennies are worth around 3 cents each. They're old, but not rare or valuable.
There are 100 cents in one dollar. Therefore, nine twentieths of a dollar is equal to 9/20 x 100 = 45 cents.
045 cents is equivalent to 45 cents. In monetary terms, it represents a fractional value of a dollar, specifically 0.45 dollars or 45/100 of a dollar. This amount can be used in transactions or as a measure of currency.
You can do this with 45 pennies (45 cents) one quarter (25 cents) 2 dimes (20 cents) and 2 nickels (10 cents). 45 + 25 + 20 + 10 = 100
As of today 45/100 of a dollar or 45 cents