乘:1.56乘24 6.7乘1.02 3.27乘0.98 3.5乘1.2 5.4乘0.9 0.84乘1.5 2.4乘0.4 1.08乘7.2
0.36乘4.5 0.21乘0.7 13.84乘0.99 0.845乘1.8 0.15乘0.4 4.69乘2.3 4.7乘0.98
除:2.25除1.5 0.14除0.3 15.6除0.08 43.2除2.4 3.23除0.95 7.2除0.18 7.2除1.2 0.95除0.14
120.4除0.43 7.5除0.3 5.6除0.28 1.634除4.3 6.48除0.12 106.02除9.3 52.48除3.2