maximum number found in memory location $350.$ Problem $3$: Counting Zeroes

Create a MARIE program that counts the number of zeroes in a block of memory locations from $\backslash (\backslash$mathbf$\{400\}\backslash )$ to $410$ and stores the count in memory location $411.$

Problem $4$: Multiplication by Addition

Given two positive numbers in memory locations $\backslash (\backslash$mathbf$\{500\}\backslash )$ and $\backslash (\backslash$mathbf$\{501\}\backslash ),$ write a MARIE program that multiplies these numbers using repeated addition and stores the result in memory location $502.$