÷ — Reciprocal / Divide

÷Y: 1/Y. Pervasive.

÷4                ⍝ 0.25

X÷Y: X/Y. Pervasive.

1x÷3x             ⍝ 1r3
0÷0               ⍝ 1

DOMAIN: zero divisor, except 0÷0=1.