求连续7个5的和是多少？3[(P4?4V6P3P+d;X0o'^.A/W
算式：提示+K'm6[-X)j9\1I(x4D,`0b6V3[(P4?4V6P3P+d;X0o'^.A/W
答：是.B8`1}9f-Z:O。3[(P4?4V6P3P+d;X0o'^.A/W