<span>163 233 : 9 + 954 160 :2 + 500 000 : 4 +1 139 349 :3=18137+477080+125000+379783=
=495217+504783=1000000
</span>
<span>1500 * 6000 - 20 017 * 7 -5426 * 60 - 54 290 * 8 =9000000-140119-325560-434320=
=8859881-325560-434320=8100001
</span>
4sin17*cos17/cos56=2*(2sin17*cos17)/cos56=2sin34/cos56=
=2sin(90-56)/cos56=2cos56/cos56=2.