Axiom Value Box with a calculated time delay

Hello, I am attempting to create a value box that has a time delay behind another value box directly tied to a received value. Here are some specifics.

Consider four Value Boxes:

Value Box 1 = changing number value from a density source

Value Box 2 = changing number value from a flow rate source

Value Box 3 = the calculation I am trying to figure out

Value Box 4 = a static number entered and changed manually

To get my time delay value I need to use this equation: Box4/Box2=(a time value in minutes)

Then Box3 = Box1 but needs to be delayed by the (time value in minutes) previously calculated. Another way to say it is that Box1 will be several minutes behind Box3, delayed.

Thanks