Maggie had some special massage lotion.<br>She gave $$\frac{3}{7}$$ of it to her neighbour and used 25% of the remainder.<br>She had 150 $$ml$$ of lotion left. <hr> How much massage lotion did she have at first? <br> <input min="0" type="number" id="imp6pg112q8_1" class="lineinput" placeholder="?">