"260-60除以5等于几"...260-60除以5等于几

　"260除以5等于多少"...260除以5等于多少

　"260+675除以5等于几"...260+675除以5等于几

　"260-1除以51等于几"...260-1除以51等于几

　"260+240除以5除以8"...260+240除以5除以8

　"260+75除以25×12等于几"...260+75除以25×12等于几

　"260-255除以4等于几"...260-255除以4等于几

　"2604除以31等于几"...2604除以31等于几

　"260除以55等于几"...260除以55等于几

　"260除以十5等于几"...260除以十5等于几