DIV: RISC-V instruction reference

divDivide 
Divides the second register by the third as signed integers and stores the quotient in the first.
RISC-V manual: div 
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Forms  div , ,   
Operands t1 Any integer register, x0 to x31, or its named alias, such as zero, t0 or t6. 
t2 An integer register. It may be the same register as t1. 
t3 An integer register. It may be the same register as t1. 
 .text
li t0, 18
li t1, 5
# t0=18, t1=5; div writes 3 to t2.
div t2, t0, t1