Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 87feeb7f65012a982fab42e849a1886794a87fdb9b23fce4947f68a7113b48cc:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^