1.\:\:((-4)\times(-5))\div((12+8+3-5)\div(-9))
                                
                             
                                                    
                                
                                    2.\:\:(12\times5)\div(((-4)-11-6+27)\div(-2))
                                
                             
                                                    
                                
                                    3.\:\:((-24)\times5)\div(((-10)+22+13+2)\div9)
                                
                             
                                                    
                                
                                    4.\:\:(5\times(-18))\div((20-18-8-9)\div5)
                                
                             
                                                    
                                
                                    5.\:\:(13\times4)\div(((-20)+8-5+11)\div3)
                                
                             
                                                    
                                
                                    6.\:\:(7\times(-9))\div((10-28-5+17)\div2)
                                
                             
                                                    
                                
                                    7.\:\:(18\times(-5))\div(((-23)-20+30+25)\div4)
                                
                             
                                                    
                                
                                    8.\:\:(6\times(-2))\div(((-15)-2-4+5)\div(-8))
                                
                             
                                                    
                                
                                    9.\:\:((-10)\times(-4))\div((20-15+13-10)\div4)
                                
                             
                                                    
                                
                                    10.\:\:((-13)\times(-30))\div((30+16+11+21)\div(-3))