The following program draws two boxes, a big one and a small one. The variables ```big``` and ```small``` keep track of the sizes of the two boxes: var big = 100; var small = 10; rect(100, 100, big, big); rect(100, 100, small, small); We want to make ```small``` dependent upon ```big```, so that they keep the same proportion when we change them - ```small``` should always be $\dfrac1{10}$ the size of ```big```. What expression should ```small``` store? [[☃ radio 1]]