In this math test, Xiao Ming scored an average of 89 points in the first four tests, and Xiao Ming scored 100 points in the fifth test. What is the average score of Xiao Ming's five times?
小明在本期数学测试中，前四次测试的平均分是89分，第五次测试小明考了100分，问小明这五次的平均分是多少分？
<gadget id="calculator">89 * 4</gadget>
<output>356</output>

<gadget id="calculator">356 + 100</gadget>
<output>456</output>

<gadget id="calculator">456 / 5</gadget>
<output>456/5 = around 91.2</output>

<result>456/5 = around 91.2</result>