Xiao Ming has 84 glass balls, and Xiao Hong has 20 glass balls. If Xiao Ming gives Xiao Hong 8 balls each time, how many times do they get the same number of balls?
小明有84个玻璃球，小红有20个玻璃球，如果小明每次给小红8个球，给几次后他们的球一样多？
<gadget id="calculator">84 - 20</gadget>
<output>64</output>

<gadget id="calculator">8 + 8</gadget>
<output>16</output>

<gadget id="calculator">64 / 16</gadget>
<output>4</output>

<result>4</result>