两数相除,商 7 余 3,如果被除数、除数、商及余数相加和是 53,被除数是 ,除数是 .
== ÷ = (小数)
÷5== =0.6=15÷ .
==0.25==.
15: ==36÷ = %
0.6== : = ÷ .