Strip the points, multiply as integers, place the point
Decimal Scaling — multiply decimals by stripping the points, not by lining them up.
For 0.43 × 12: strip the points to get the integers 43 and 12; multiply → 43 × 12 = 516; count the decimal places you stripped (2 + 0 = 2); slide the point 2 in from the right → 5.16. You enter the method step by step — the whole-number product, the decimal-place count, then the placed answer — and each step unlocks only when the one before it is right. Five levels climb from one decimal to two-decimal × two-decimal; the steps fade away as you climb until only a bare answer box is left, and a short timed boss caps each level.