请你仔细算一算，这里一共有{#blank#}2{#/blank#}个圆?

6×{#blank#}1{#/blank#}=30       72÷{#blank#}2{#/blank#}=9        48÷{#blank#}3{#/blank#}=8

9÷{#blank#}4{#/blank#}=9        9×{#blank#}5{#/blank#}=54       36÷{#blank#}6{#/blank#}=9

63÷{#blank#}7{#/blank#}=9       {#blank#}8{#/blank#}×7 =35      {#blank#}9{#/blank#}×4 = 28

4×{#blank#}1{#/blank#}<21                  {#blank#}2{#/blank#}×5<38               28>{#blank#}3{#/blank#}×4

45÷5>{#blank#}4{#/blank#}×4               3×{#blank#}5{#/blank#}<25              3×{#blank#}6{#/blank#}<20