document.write('<p>186-25=161（本）</p><p>161-11=150（本）</p><p>150<span style=\"font-family: Simsun; font-size: 16px; line-height: 35px;\">&divide;（1+2）=50</span>（本）</p><p>50<span style=\"font-family: Simsun; font-size: 16px; line-height: 35px;\">&times;2+11=111</span>（本）</p>');