Question

............... is a way of performing multiplication and division using mechanical rods. ​

Answer 1

Answer:

Napier's bones is a way of performing multiplication and division using mechanical rods.

Answer 2

Napier developed a mechanical method for performing multiplication and division. This method, known as "Napier's bones," was based upon manipulation of rods with printed digits. The rods were made of bone, ivory, wood, or metal.

so the answer is napiers bones