n = input() if '+' in n: a,b = map(float,n.split('+')) print('%.4f+%.4f=%.4f'%(a,b,a+b)) elif '-' in n: a,b = map(float,n.split('-')) print('%.4f-%.4f=%.4f'%(a,b,a-b)) elif '*' in n: a,b = map(float,n.split('*')) print('%.4f*%.4f=%.4f'%(a,b,a*b)) elif '/' in n: a,b = map(float,n.split('/')) if b == ...