x, y represent two numbers, and the new operations "○" and "△" are stipulated as follows: x○y=mx+ny, x△y=kxy, where m, n, k are all positive integers. It is known that 1○2=5, (2○3)△5=90, then what is the value of (1△2)○3.
x，y表示两个数，规定新运算"○"及"△"如下：x○y=mx+ny，x△y=kxy，其中m，n，k均为正整数．已知1○2=5，(2○3)△5=90，那么(1△2)○3的值是多少．
<gadget id="calculator">2 * 2 * 1</gadget>
<output>4</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">4 + 6</gadget>
<output>10</output>

<result>10</result>