$7.$ Super phosphate is being replaced with triple super phosphate due to its higher phosphorus content for a particular crop. If $200$ kg of super phosphate $(20\%$ P$)$ was the previous application rate, how much triple super phosphate $(46\%$ P$)$ is needed for the equivalent phosphorus application?

$8.$ Monoammonium phosphate $($MAP$)$ is applied at a rate of $150$ kg per hectare. If MAP contains $12\%$ nitrogen $($N$)$ and $61\%$ phosphorus pentoxide $($P$$O$),$ how much nitrogen and phosphorus pentoxide are applied to the field?