Madonna -- Do the Math and It All Adds Up

Madonna's two eldest children, Lourdes and Rocco, hung out Wednesday with her boyfriend, Timor Steffens, in the South of France.

A quick check of the math ... Lourdes is 17, Rocco is 13 and Timor is 26 ... which adds up to 56.

Madonna turns 56 later this month. Let that sink in for a moment ...