下列数按要求填入括号内。126,175,237,248,257,288,356,381,420,429,574,6813的倍数( )
69+18+23+31+82= .
1.25×98+×+= .
计算:8+98+998+9998= 9+99+102+103+101+98= .
计算:64×12.5×0.25×0.05= .
计算:1.25×31.3×24= .