You can mix integers and non$-$integers in a single expression. For example:

$123."$A$"="123$A$""4$A$"+123=127"5\mathrm{.}5"+5=10$

Non$-$integers are converted to integers as required by the operators. The non$-$integer converts to an integer starting with the leftmost character and continuing until encountering a non$-$ numeric character. In the second example above, $"4$A$"$ converts to $4$; in the third example,

$"5\mathrm{.}5"$ converts Question:

A$.$ B$.$ C$.$ D$.$ E$.$ F$.$

to $5.$

What is the value of $"1\mathrm{.}2"+3\mathrm{.}4?$

$4\mathrm{.}4$

$4\mathrm{.}6$

$44$

$46\mathrm{.}2$

$154$

None of the above