can you help me find the answer

If P$1$ million is placed in a time deposit account for $90$ days at $0\mathrm{.}75\%$ interest, $($use $360$ for t$)$

$1.$ Find the interest the placement earns.

$2.$ How much is the withholding tax?

$3.$ Find the maturity value of the placement after the tax is deducted.

If P$250,000$ is invested for two years, what is the maturity value $($disregard withholding tax for #s $4$ and $5)$

$4.$ at $5\%$ compounded quarterly?

$5.$ at $5\mathrm{.}5\%$ compounded semiannually?

Dan bought $200$ shares of a stock at P$140$ per share. A year later, he sold the stocks at P$145\mathrm{.}50$ a share.

$6.$ How much money did Dan make on the sale $($excluding buying and selling charges$)?$

$7.$ Assuming that Dan did not receive dividends, what is his total stock ROI $($excluding charges$)?$

$8.$ If during the year he held the stock, Dan received P$2\mathrm{.}25$ dividend per share, what is his total stock ROI $($excluding charges$)?$