The product or quotient of two numbers with the same sign
it will get the answers with positive numbers and if the product or quotient of
two number with different signs it will get the negative numbers.
<span><span>- </span><span> x - = + </span></span>
<span>+ x + = + </span>
<span><span>- </span><span>/ - = + </span></span>
<span>+ / + = +</span>
