A table of notes receivable for $2016$ follows:

$\backslash$table$[[,$Principal,Interest Rate,Interest Period During $2016],[$Note $1,$$$50,000,7\%,9$ months$],[$Note $2,16,000,12\%,270$ days$],[$Note $3,20,000,6\%,180$ days$],[$Note $4,140,000,8\%,3$ months$]]$

For each of the notes receivable, compute the amount of interest revenue earned during $2016$Round to the nearest dollar. $($Use a $360-$day year for the notes with interest periods in days and a $12-$month year for notes with interest periods in months.$)$

Note $1$

Note $2$

Note $3$

Note $4$