(13 * 0.58-4087 + 0.42 * 13-5.13) * 4.25

(13 * 0.58-4087 + 0.42 * 13-5.13) * 4.25

[13(0.58+0.42)-4087-5.13]*4.25
=-4079.13*4.25
=17336.3025