$4-52.$ A financial consultant offers you a pension product

that allows you to invest your retirement savings of

$$300,000$ in a deposit that pays $4\%$ per annum. At the

same time, you can annually withdraw up to $$25,000$ from

this savings pool. How many years will your savings last,

if you were to withdraw up to the annual limit every

year? $(4\mathrm{.}7)$