It doesn't help us to understand it. It's still invisible. We might as well call it magic. That's exactly what Newton did with his equations of motion and mechanics in the seventeenth century. Both Bernoulli's equation and Newton's equations use calculus.
Calculus works by making visible the infinitesimally small.
That's another example of making the invisible visible. Two thousand years before we could send spacecraft into outer space to provide us with pictures of our planet, the Greek mathematician Eratosthenes used mathematics to show that the earth was round. Today, we may be close to repeating Eratosthenes' feat and discover whether the universe is curved. According to the astronomer Robert Kirschner, we will soon see far enough to be able to detect any curvature in space, and to measure any curvature that we find. Knowing the curvature of space has a corollary, as we say in the mathematics business.